10-letter words starting with A
Embark on a linguistic journey with words that begin with the letter A. This section showcases how A at the start shapes the identity and sound of various words. From commonly used terms to rare finds, explore the diverse range of words that start with A, enriching your vocabulary and appreciation for language.
| Word | Points | Definition | Sentence example |
|---|---|---|---|
| absolutely | 15 | completely and without qualification; used informally as intensifiers | an absolutely magnificent painting |
| appreciate | 16 | be fully aware of; realize fully | Do you appreciate the full meaning of this letter? |
| apparently | 17 | unmistakably (`plain' is often used informally for `plainly') | she has apparently been living here for some time |
| afterwards | 17 | happening at a time subsequent to a reference time | - |
| attractive | 15 | having power to arouse interest | an attractive opportunity |
| atmosphere | 17 | a particular environment or surrounding influence | there was an atmosphere of excitement |
| appearance | 16 | pretending that something is the case in order to make a good impression | they try to keep up appearances |
| aggressive | 15 | characteristic of an enemy or one eager to fight | aggressive acts against another country |
| assignment | 13 | a duty that you are assigned to perform (especially in the armed forces) | - |
| assistance | 12 | a person or thing that is a resource that helps make something easier or possible to do | his job was to give technical assistance over the phone |
| ambassador | 15 | a diplomat of the highest rank; accredited as representative from one country to another | - |
| accountant | 14 | someone who maintains and audits business accounts | - |
| attraction | 12 | the quality of arousing interest; being attractive or something that attracts | her personality held a strange attraction for him |
| artificial | 15 | artificially formal | that artificial humility that her husband hated |
| altogether | 14 | informal terms for nakedness | in the altogether |
| accomplish | 21 | to gain with effort | - |
| acceptable | 18 | meeting requirements | - |
| additional | 12 | further or added | called for additional troops |
| authorized | 23 | endowed with authority | - |
| ammunition | 14 | projectiles to be fired from a gun | - |
| accomplice | 20 | a person who joins with another in carrying out some plan (especially an unethical or illegal plan) | - |
| associated | 13 | - | - |
| aggression | 12 | violent action that is hostile and usually unprovoked | - |
| adrenaline | 11 | a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action | - |
| acquainted | 22 | having fair knowledge of | they were acquainted |
| apprentice | 16 | works for an expert to learn a trade | - |
| accounting | 15 | a statement of recent transactions and the resulting balance | they send me an accounting every month |
| automobile | 14 | a motor vehicle with four wheels; usually propelled by an internal combustion engine | - |
| auspicious | 14 | auguring favorable circumstances and good luck | an auspicious beginning for the campaign |
| apologized | 23 | - | - |
| accustomed | 17 | commonly used or practiced; usual | his accustomed thoroughness |
| acceptance | 18 | the mental attitude that something is believable and should be accepted as true | acceptance of Newtonian mechanics was unquestioned for 200 years |
| assessment | 12 | the act of judging or assessing a person or situation or event | - |
| attendance | 13 | the act of being present (at a meeting or event etc.) | - |
| allegiance | 13 | the loyalty that citizens owe to their country (or subjects to their sovereign) | - |
| astronauts | 10 | - | - |
| accusation | 14 | a formal charge of wrongdoing brought against a person; the act of imputing blame or guilt | - |
| accidental | 15 | happening by chance or unexpectedly or unintentionally | accidental poisoning |
| apocalypse | 19 | the last book of the New Testament; contains visionary descriptions of heaven and of conflicts between good and evil and of the end of the world; attributed to Saint John the Apostle | - |
| assumption | 14 | a hypothesis that is taken for granted | any society is built upon certain assumptions |
| admiration | 13 | a favorable judgment | a small token in admiration of your works |
| announcing | 13 | - | - |
| adaptation | 13 | the process of adapting to something (such as environmental conditions) | - |
| adjustment | 20 | the act of making something different (as e.g. the size of a garment) | - |
| accurately | 17 | with few mistakes | he works very accurately |
| anticipate | 14 | regard something as probable or likely | - |
| accelerate | 14 | cause to move faster | He accelerated the car |
| accordance | 17 | the act of granting rights | the accordance to Canada of rights of access |
| adolescent | 13 | displaying or suggesting a lack of maturity | adolescent insecurity |
| auditorium | 13 | the area of a theater or concert hall where the audience sits | - |
| afternoons | 13 | - | - |
| abstinence | 14 | the trait of abstaining (especially from alcohol) | - |
| accessible | 16 | capable of being read with comprehension | readily accessible to the nonprofessional reader |
| archbishop | 22 | a bishop of highest rank | - |
| addressing | 13 | - | - |
| astonished | 14 | filled with the emotional impact of overwhelming surprise or shock | I stood enthralled, astonished by the vastness and majesty of the cathedral |
| anesthesia | 13 | loss of bodily sensation with or without loss of consciousness | - |
| astrologer | 11 | someone who predicts the future by the positions of the planets and sun and Moon | - |
| articulate | 12 | provide with a joint | - |
| anesthetic | 15 | characterized by insensibility | the young girls are in a state of possession--blind and deaf and anesthetic |
| antichrist | 15 | (Christianity) the adversary of Christ (or Christianity) mentioned in the New Testament; the Antichrist will rule the world until overthrown by the Second Coming of Christ | - |
| attachment | 17 | the act of attaching or affixing something | - |
| astounding | 12 | so surprisingly impressive as to stun or overwhelm | an astounding achievement |
| abominable | 16 | unequivocally detestable | abominable treatment of prisoners |
| administer | 13 | work in an administrative capacity; supervise or be in charge of | administer a program |
| aggravated | 16 | incited, especially deliberately, to anger | aggravated by passive resistance |
| annihilate | 13 | kill in large numbers | - |
| affordable | 19 | that you have the financial means for | - |
| advertised | 15 | called to public attention | these advertised products |
| adventurer | 14 | someone who travels into little known regions (especially for some scientific purpose) | - |
| apparition | 14 | something existing in perception only | a ghostly apparition at midnight |
| aristocrat | 12 | a member of the aristocracy | - |
| accumulate | 16 | get or gather together | - |
| attributed | 13 | - | - |
| arithmetic | 17 | relating to or involving arithmetic | arithmetical computations |
| affliction | 18 | a cause of great suffering and distress | - |
| activation | 15 | the activity of causing to have energy and be active | - |
| astronomer | 12 | a physicist who studies astronomy | - |
| alcoholism | 17 | habitual intoxication; prolonged and excessive intake of alcoholic drinks leading to a breakdown in health and an addiction to alcohol such that abrupt deprivation leads to severe withdrawal symptoms | - |
| archeology | 19 | the branch of anthropology that studies prehistoric people and their cultures | - |
| absolution | 12 | the act of absolving or remitting; formal redemption as pronounced by a priest in the sacrament of penance | - |
| activating | 16 | causing motion or action or change | - |
| authorised | 14 | endowed with authority | - |
| affiliated | 17 | being joined in close association | affiliated clubs |
| admittedly | 17 | as acknowledged | - |
| autonomous | 12 | (of political bodies) not controlled by outside forces | an autonomous judiciary |
| aberration | 12 | an optical phenomenon resulting from the failure of a lens or mirror to produce a good image | - |
| amputation | 14 | a condition of disability resulting from the loss of one or more limbs | - |
| applicable | 18 | capable of being applied; having relevance | gave applicable examples to support her argument |
| antibiotic | 14 | a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections | when antibiotics were first discovered they were called wonder drugs |
| assembling | 15 | the act of gathering something together | - |
| antiseptic | 14 | a substance that destroys micro-organisms that carry disease without harming body tissues | - |
| antisocial | 12 | hostile to or disruptive of normal standards of social behavior | criminal behavior or conduct that violates the rights of other individuals is antisocial |
| anatomical | 14 | of or relating to the branch of morphology that studies the structure of organisms | anatomical research |
| aboriginal | 13 | characteristic of or relating to people inhabiting a region from the beginning | the aboriginal peoples of Australia |
| aesthetics | 15 | (art) the branch of philosophy dealing with beauty and taste (emphasizing the evaluative criteria that are applied to art) | traditional aesthetics assumed the existence of universal and timeless criteria of artistic value |
| adequately | 23 | in an adequate manner or to an adequate degree | he was adequately prepared |
| aspiration | 12 | the act of inhaling; the drawing in of air (or other gases) as in breathing | - |
| aftershave | 19 | - | - |
| apologised | 14 | - | - |
| antibodies | 13 | - | - |
| automotive | 15 | containing within itself the means of propulsion or movement | - |
| assimilate | 12 | take up mentally | - |
| alternator | 10 | an old term for an electric generator that produces alternating current (especially in automobiles) | - |
| alteration | 10 | the act of making something different (as e.g. the size of a garment) | - |
| adjustable | 20 | capable of being changed so as to match or fit | adjustable seat belts |
| antimatter | 12 | matter consisting of elementary particles that are the antiparticles of those making up normal substances | - |
| allegation | 11 | statements affirming or denying certain matters of fact that you are prepared to prove | - |
| altruistic | 12 | showing unselfish concern for the welfare of others | - |
| apostrophe | 17 | address to an absent or imaginary person | - |
| antiquated | 20 | so extremely old as seeming to belong to an earlier period | - |
| abnormally | 17 | in an abnormal manner | they were behaving abnormally |
| absorption | 14 | (chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid | - |
| arrhythmia | 21 | an abnormal rate of muscle contractions in the heart | - |
| alienation | 10 | separation resulting from hostility | - |
| abundantly | 16 | in an abundant manner | they were abundantly supplied with food |
| advocating | 17 | - | - |
| analytical | 15 | of a proposition that is necessarily true independent of fact or experience | - |
| adulterous | 11 | characterized by adultery | an adulterous relationship |
| admissible | 15 | deserving to be admitted | admissible evidence |
| amphibious | 19 | relating to or characteristic of animals of the class Amphibia | - |
| acrobatics | 16 | the gymnastic moves of an acrobat | - |
| answerable | 15 | capable of being answered | - |
| aquamarine | 21 | a shade of blue tinged with green | - |
| allocation | 12 | (computer science) the assignment of particular areas of a magnetic disk to particular data or instructions | - |
| ambivalent | 17 | uncertain or unable to decide about what course to follow | was ambivalent about having children |
| automation | 12 | the act of implementing the control of equipment with advanced technology; usually involving electronic hardware | automation replaces human workers by machines |
| apologetic | 15 | offering or expressing apology | an apologetic note |
| assortment | 12 | the act of distributing things into classes or categories of the same type | - |
| amateurish | 15 | lacking professional skill or expertise | a very amateurish job |
| accelerant | 14 | - | - |
| admittance | 15 | the act of admitting someone to enter | - |
| appetizing | 24 | appealing to or stimulating the appetite especially in appearance or aroma | - |
| accentuate | 14 | to stress, single out as important | - |
| adulteress | 11 | a woman adulterer | - |
| abstention | 12 | the trait of abstaining (especially from alcohol) | - |
| apolitical | 14 | politically neutral | - |
| antagonize | 20 | provoke the hostility of | Don't antagonize your boss |
| archetypal | 20 | representing or constituting an original type after which other similar things are patterned | archetypal patterns |
| advisement | 16 | careful consideration | - |
| arrogantly | 14 | in an arrogant manner | in the old days she had been harsh and stiff; afraid of her husband and yet arrogantly proud that she had a husband strong and fierce enough to make her afraid |
| alienating | 11 | causing hostility or loss of friendliness | her sudden alienating aloofness |
| aftershock | 22 | a tremor (or one of a series of tremors) occurring after the main shock of an earthquake | - |
| annexation | 17 | incorporation by joining or uniting | - |
| applesauce | 16 | nonsensical talk or writing | - |
| antithesis | 13 | exact opposite | his theory is the antithesis of mine |
| annoyingly | 17 | in an annoying manner or to an annoying degree | - |
| apothecary | 20 | a health professional trained in the art of preparing and dispensing drugs | - |
| aftertaste | 13 | an afterimage of a taste | - |
| aficionado | 16 | a fan of bull fighting | - |
| advertiser | 14 | someone whose business is advertising | - |
| autoimmune | 14 | of or relating to the immune response of the body against substance normally present in the body | - |
| antagonism | 13 | a state of deep-seated ill-will | - |
| afterworld | 17 | the place where you are after you die | - |
| abdication | 15 | the act of abdicating | - |
| attainable | 12 | capable of being attained or accomplished | choose an attainable goal |
| alarmingly | 16 | in an alarming manner | It grew alarmingly fast |
| acclimated | 17 | - | - |
| autocratic | 14 | characteristic of an absolute ruler or absolute rule; having absolute sovereignty | autocratic government |
| avaricious | 15 | immoderately desirous of acquiring e.g. wealth | they are avaricious and will do anything for money |
| authorship | 18 | the act of initiating a new idea or theory or writing | the authorship of the theory is disputed |
| antifreeze | 22 | a liquid added to the water in a cooling system to lower its freezing point | - |
| asphyxiate | 25 | be asphyxiated; die from lack of oxygen | - |
| accredited | 16 | given official approval to act | an accredited college |
| acrophobia | 19 | a morbid fear of great heights | - |
| attenuated | 11 | reduced in strength | - |
| asymmetric | 19 | characterized by asymmetry in the spatial arrangement or placement of parts or components | - |
| auctioneer | 12 | sell at an auction | - |
| appositive | 17 | relating to or being in apposition | an appositive noun |
| apocryphal | 22 | being of questionable authenticity | - |
| appetising | 15 | appealing to or stimulating the appetite especially in appearance or aroma | - |
| antagonist | 11 | someone who offers opposition | - |
| astringent | 11 | sour or bitter in taste | - |
| arbitrator | 12 | someone chosen to judge and decide a disputed issue | the arbitrator's authority derived from the consent of the disputants |
| alchemical | 19 | related to or concerned with alchemy | - |
| amputating | 15 | - | - |
| abstracted | 15 | lost in thought; showing preoccupation | - |
| aboveboard | 18 | without concealment or deception; honest | their business was open and aboveboard |
| achievable | 20 | capable of existing or taking place or proving true; possible to do | - |
| attainment | 12 | an ability that has been acquired by training | - |
| antagonise | 11 | provoke the hostility of | - |
| ascendancy | 18 | the state that exists when one person or group has power over another | - |
| assemblage | 15 | a system of components assembled together for a particular purpose | - |
| arrestment | 12 | - | - |
| alleviated | 14 | (of pain or sorrow) made easier to bear | - |
| aggregated | 14 | formed of separate units gathered into a mass or whole | the aggregated amount of indebtedness |
| afterbirth | 18 | the placenta and fetal membranes that are expelled from the uterus after the baby is born | - |
| amplifying | 21 | - | - |
| abstractly | 17 | in abstract terms | - |
| abominably | 19 | in a terrible manner | - |
| actionable | 14 | affording grounds for legal action | slander is an actionable offense |
| autoerotic | 12 | sexually satisfying yourself (as by masturbation) | - |
| apoplectic | 18 | pertaining to or characteristic of apoplexy | apoplectic seizure |
| apotheosis | 15 | the elevation of a person (as to the status of a god) | - |
| alimentary | 15 | of or providing nourishment | - |
| altarpiece | 14 | a painted or carved screen placed above and behind an altar or communion table | - |
| abdicating | 16 | - | - |
| applicator | 16 | a device for applying a substance | - |
| antecedent | 13 | someone from whom you are descended (but usually more remote than a grandparent) | - |
| allocating | 13 | - | - |
| alternated | 11 | - | - |
| ambulatory | 17 | able to walk about | the patient is ambulatory |
| adulterate | 11 | corrupt, debase, or make impure by adding a foreign or inferior substance; often by replacing valuable ingredients with inferior ones | adulterate liquor |
| acoustical | 14 | of or relating to the science of acoustics | - |
| adjudicate | 21 | bring to an end; settle conclusively | The father adjudicated when the sons were quarreling over their inheritance |
| alprazolam | 23 | an antianxiety agent (trade name Xanax) of the benzodiazepine class | - |
| automatism | 14 | any reaction that occurs automatically without conscious thought or reflection (especially the undirected behavior seen in psychomotor epilepsy) | - |
| anxiolytic | 22 | a tranquilizer used to relieve anxiety and reduce tension and irritability | - |
| asceticism | 16 | rigorous self-denial and active self-restraint | - |
| archerfish | 21 | any of several small freshwater fishes that catch insects by squirting water at them and knocking them into the water; found in Indonesia and Australia | - |
| alphabetic | 19 | arranged in order according to the alphabet | an alphabetic arrangement |
| agronomist | 13 | an expert in soil management and field-crop production | - |
| annotation | 10 | the act of adding notes | - |
| ambulation | 14 | walking about | the hospital encouraged early ambulation |
| accusatory | 17 | containing or expressing accusation | black accusatory looks |
| absorbable | 16 | capable of being absorbed or taken in through the pores of a surface | - |
| admonition | 13 | a firm rebuke | - |
| affability | 21 | a disposition to be friendly and approachable (easy to talk to) | - |
| automating | 13 | - | - |
| astronomic | 14 | inconceivably large | - |
| attractant | 12 | - | - |
| anticlimax | 21 | a change from a serious subject to a disappointing one | - |
| antebellum | 14 | belonging to a period before a war especially the American Civil War | - |
| allopathic | 17 | of or relating to the practice of allopathy | allopathic remedies |
| aggrandize | 22 | add details to | - |
| alexanders | 18 | European herb somewhat resembling celery widely naturalized in Britain coastal regions and often cultivated as a potherb | - |
| anglicized | 23 | - | - |
| anglophile | 16 | an admirer of England and things English | - |
| amiability | 17 | a cheerful and agreeable mood | - |
| analogical | 13 | expressing, composed of, or based on an analogy | the analogical use of a metaphor |
| abnegation | 13 | renunciation of your own interests in favor of the interests of others | - |
| abreaction | 14 | (psychoanalysis) purging of emotional tensions | - |
| advocation | 16 | - | - |
| acquitting | 22 | - | - |
| activewear | 18 | attire worn for sport or for casual wear | - |
| autologous | 11 | derived from organisms of the selfsame individual | autologous blood donation |
| atrophying | 19 | - | - |
| atypically | 20 | in a manner that is not typical | she was atypically quiet |
| aphrodisia | 16 | a desire for heterosexual intimacy | - |
| anticancer | 14 | used in the treatment of cancer | anticancer drug |
| alkalinity | 17 | pH values above 7 | - |
| amanuensis | 12 | someone skilled in the transcription of speech (especially dictation) | - |
| anglophone | 16 | - | - |
| ameliorate | 12 | get better | - |
| academical | 17 | - | - |
| absolutism | 14 | the principle of complete and unrestricted power in government | - |
| advantaged | 16 | - | - |
| admiringly | 17 | - | - |
| aerobatics | 14 | the performance of stunts while in flight in an aircraft | - |
| adulticide | 14 | - | - |
| archeparch | 22 | - | - |
| archivally | 21 | - | - |
| arenavirus | 13 | animal viruses belonging to the family Arenaviridae | - |
| arousingly | 14 | - | - |
| arrabbiata | 14 | - | - |
| audibilize | 22 | - | - |
| autoloader | 11 | a firearm that reloads itself | - |
| aquaponics | 23 | - | - |
| antlerless | 10 | - | - |
| aftertouch | 18 | - | - |
| allochthon | 18 | - | - |
| anonymiser | 15 | - | - |
| anonymizer | 24 | - | - |
| anticavity | 18 | - | - |
| antihunger | 14 | - | - |
| antisodomy | 16 | - | - |
| anestruses | 10 | - | - |
| artmakings | 17 | - | - |
| arcminutes | 14 | - | - |
| archstones | 15 | - | - |
| archdruids | 17 | - | - |
| aquascapes | 23 | - | - |
| appletinis | 14 | - | - |
| apophenias | 17 | - | - |
| antivirals | 13 | - | - |
| antivaxxer | 27 | - | - |
| antivaxers | 20 | - | - |
| antitumour | 12 | used in the treatment of cancer | - |
| antishakes | 17 | - | - |
| antiquiest | 19 | - | - |
| antiporter | 12 | - | - |
| antinoises | 10 | - | - |
| antiarmour | 12 | - | - |
| anthemises | 15 | - | - |
| asphyxying | 29 | - | - |
| athleisure | 13 | - | - |
| attometers | 12 | - | - |
| avoparcins | 17 | - | - |
| avalements | 15 | - | - |
| autumniest | 12 | - | - |
| autosports | 12 | - | - |
| autosaving | 14 | - | - |
| autonymous | 15 | - | - |
| autoloaded | 12 | - | - |
| autodromes | 13 | - | - |
| autodialed | 12 | - | - |
| autobodies | 13 | - | - |
| attoteslas | 10 | - | - |
| attosecond | 13 | one quintillionth (10^-18) of a second; one thousandth of a femtosecond | - |
| attometres | 12 | - | - |
| ansaphones | 15 | - | - |
| anointings | 11 | - | - |
| annuitizes | 19 | - | - |
| airbursted | 13 | - | - |
| airballing | 13 | - | - |
| ahuruhurus | 16 | - | - |
| agnolottis | 11 | - | - |
| agflations | 14 | - | - |
| afterparty | 18 | - | - |
| aftermasts | 15 | - | - |
| afterguard | 15 | - | - |
| afterburns | 15 | - | - |
| aerospikes | 16 | - | - |
| adenylates | 14 | - | - |
| adderbeads | 15 | - | - |
| actressier | 12 | - | - |
| actorliest | 12 | - | - |
| acidically | 18 | - | - |
| aciclovirs | 17 | - | - |
| acathisias | 15 | - | - |
| allodynias | 14 | - | - |
| allweather | 16 | - | - |
| almightier | 16 | - | - |
| annuitized | 20 | - | - |
| annuitises | 10 | - | - |
| annuitised | 11 | - | - |
| animateurs | 12 | - | - |
| anguipedes | 14 | - | - |
| angishores | 14 | - | - |
| ancestrals | 12 | - | - |
| ampacities | 16 | - | - |
| amazeballs | 23 | - | - |
| amarantins | 12 | - | - |
| aluminides | 13 | - | - |
| altissimos | 12 | - | - |
| alphatests | 15 | - | - |
| alopecoids | 15 | - | - |
| aloeswoods | 14 | - | - |
| almondites | 13 | - | - |
| almondiest | 13 | - | - |
| acesulfame | 17 | - | - |
| autometers | 12 | - | - |
| autopilots | 12 | - | - |
| autopistas | 12 | - | - |
| autoplasty | 15 | tissue that is taken from one site and grafted to another site on the same person | - |
| autopoints | 12 | - | - |
| autopsists | 12 | - | - |
| autopsying | 16 | - | - |
| autoptical | 14 | - | - |
| autorotate | 10 | - | - |
| autophytic | 20 | of or relating to organisms (as green plants) that can make complex organic nutritive compounds from simple inorganic sources by photosynthesis | - |
| autophytes | 18 | - | - |
| autonomics | 14 | - | - |
| autonomies | 12 | - | - |
| autonomist | 12 | - | - |
| autophagia | 16 | - | - |
| autophobia | 17 | - | - |
| autoroutes | 10 | - | - |
| autoscopic | 16 | - | - |
| autosexing | 18 | (especially of domestic fowl) breeding to reveal differential sex characteristics at hatching | - |
| autotomous | 12 | - | - |
| autotoxins | 17 | - | - |
| autotrophs | 15 | - | - |
| autotrophy | 18 | - | - |
| autotypies | 15 | - | - |
| autotyping | 16 | - | - |
| autowinder | 14 | - | - |
| autoworker | 17 | - | - |
| autotomize | 21 | cause a body part to undergo autotomy | - |
| autotomise | 12 | cause a body part to undergo autotomy | - |
| autospores | 12 | - | - |
| autostrada | 11 | an expressway in an Italian-speaking country | - |
| autostrade | 11 | - | - |
| autoteller | 10 | - | - |
| autotheism | 15 | - | - |
| autotheist | 13 | - | - |
| autotimers | 12 | - | - |
| autotomies | 12 | - | - |
| autumnally | 15 | - | - |
| automatous | 12 | - | - |
| autobahnen | 15 | - | - |
| autoecisms | 14 | - | - |
| autoflares | 13 | - | - |
| autogamies | 13 | - | - |
| autogamous | 13 | characterized by or fit for autogamy | - |
| autogenics | 13 | training patients in self-induced relaxation | - |
| autogenies | 11 | - | - |
| autogenous | 11 | originating within the body | - |
| autoecious | 12 | of parasites especially rust fungi; completing the entire life cycle on a single host | autoecious rust fungi |
| autodidact | 14 | a person who has taught himself | - |
| autobusses | 12 | - | - |
| autochthon | 18 | the earliest known inhabitants of a region | - |
| autoclaved | 16 | - | - |
| autoclaves | 15 | - | - |
| autocrimes | 14 | - | - |
| autocuties | 12 | - | - |
| autocycles | 17 | - | - |
| autografts | 14 | - | - |
| autographs | 16 | - | - |
| autography | 19 | - | - |
| automakers | 16 | - | - |
| automatics | 14 | - | - |
| automatise | 12 | turn into an automaton | - |
| automatist | 12 | - | - |
| automatize | 21 | turn into an automaton | - |
| autolyzing | 23 | - | - |
| autolyzate | 22 | - | - |
| autoguides | 12 | - | - |
| autojumble | 21 | - | - |
| autologies | 11 | - | - |
| autolysate | 13 | - | - |
| autolysing | 14 | - | - |
| autolysins | 13 | - | - |
| automatons | 12 | - | - |
| axenically | 22 | - | - |
| axoplasmic | 23 | - | - |
| ayahuascas | 18 | - | - |
| ayahuascos | 18 | - | - |
| ayatollahs | 16 | - | - |
| ayurvedics | 19 | - | - |
| azedarachs | 25 | - | - |
| azeotropes | 21 | - | - |
| azeotropic | 23 | - | - |
| axonometry | 22 | - | - |
| axolemmata | 21 | - | - |
| axialities | 17 | - | - |
| axillaries | 17 | - | - |
| axinomancy | 24 | - | - |
| axiologies | 18 | - | - |
| axiologist | 18 | - | - |
| axiomatics | 21 | - | - |
| axiomatise | 19 | - | - |
| axiomatize | 28 | - | - |
| azobenzene | 30 | - | - |
| azotaemias | 21 | - | - |
| azygospore | 25 | - | - |
| awkwardish | 24 | - | - |
| auxochrome | 24 | - | - |
| avengement | 16 | - | - |
| avengeress | 14 | - | - |
| aventailes | 13 | - | - |
| aventurine | 13 | a translucent quartz spangled with bits of mica or other minerals | - |
| aventurins | 13 | - | - |
| averagings | 15 | - | - |
| averseness | 13 | - | - |
| aversively | 19 | - | - |
| avenaceous | 15 | - | - |
| auxometers | 19 | - | - |
| auxospores | 19 | - | - |
| auxotrophs | 22 | - | - |
| auxotrophy | 25 | - | - |
| availingly | 17 | - | - |
| avalanched | 19 | - | - |
| avalanches | 18 | - | - |
| avanturine | 13 | - | - |
| avertiment | 15 | - | - |
| avgolemono | 16 | - | - |
| avianising | 14 | - | - |
| avouchable | 20 | - | - |
| avouchment | 20 | a statement asserting the existence or the truth of something | - |
| avouterers | 13 | - | - |
| avunculate | 15 | - | - |
| avvogadore | 18 | - | - |
| awakenings | 18 | - | - |
| awaynesses | 16 | - | - |
| awestrikes | 17 | - | - |
| avoidances | 16 | - | - |
| avocations | 15 | - | - |
| avianizing | 23 | - | - |
| aviatrices | 15 | - | - |
| aviatrixes | 20 | - | - |
| aviculture | 15 | - | - |
| avidnesses | 14 | - | - |
| avisandums | 16 | - | - |
| avisements | 15 | - | - |
| avizandums | 25 | - | - |
| awkwardest | 21 | - | - |
| attackable | 18 | - | - |
| attainders | 11 | - | - |
| attainting | 11 | - | - |
| attainture | 10 | - | - |
| attempered | 15 | - | - |
| attachable | 17 | capable of being fastened or added to something else | a handle attachable by two bolts |
| atomically | 17 | - | - |
| atonalisms | 12 | - | - |
| atonalists | 10 | - | - |
| atonements | 12 | - | - |
| atrabiliar | 12 | - | - |
| atracurium | 14 | - | - |
| atramental | 12 | - | - |
| atrocities | 12 | - | - |
| attempters | 14 | - | - |
| attempting | 15 | - | - |
| attestants | 10 | - | - |
| attestator | 10 | (law) a person who attests to the genuineness of a document or signature by adding their own signature | - |
| atticising | 13 | - | - |
| atticizing | 22 | - | - |
| attirement | 12 | - | - |
| attolasers | 10 | - | - |
| attollents | 10 | - | - |
