11-letter words starting with O
Embark on a linguistic journey with words that begin with the letter O. This section showcases how O 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 O, enriching your vocabulary and appreciation for language.
- opportunity 18
- outstanding 13
- observation 16
- operational 13
- orientation 11
- overlapping 19
- obstruction 15
- observatory 19
- overflowing 21
- overlooking 19
- obliterated 14
- originality 15
- objectively 28
- opportunist 15
- objectivity 28
- overbearing 17
- overheating 18
- opinionated 14
- obsessively 19
- originating 13
- overexcited 24
- omnipresent 15
- overwrought 21
- organically 17
- overhearing 18
- overzealous 23
- orchestrate 16
- overdressed 16
- omnipotence 17
- overstepped 19
- oscillating 14
- offensively 23
- overhanging 19
- orthopedics 19
- officiating 20
- optometrist 15
- ostentation 11
- overworking 22
- obstinately 16
- ornithology 18
- overexposed 24
- outstripped 16
- origination 12
- orthography 23
- orthopedist 17
- outdistance 14
- obfuscation 18
- obnoxiously 23
- overindulge 16
- oxygenation 22
- officialdom 22
- omniscience 17
- ontological 14
- opportunism 17
- overanalyze 26
- orderliness 12
- orientalist 11
- orthopaedic 19
- oscillation 13
- overproduce 19
- obsessional 13
- overpraised 17
- overfeeding 19
- overstuffed 21
- overnighter 18
- outdoorsman 14
- obstructive 18
- obviousness 16
- officiation 19
- operatively 19
- overanxious 21
- oxygenating 23
- outthinking 19
- orthodontic 17
- outbuilding 15
- outcropping 18
- outmaneuver 16
- oarsmanship 18
- obdurations 14
- obediential 14
- obesenesses 13
- obfuscating 19
- obituarists 13
- objectified 26
- objectifies 25
- objectivate 25
- objectivise 25
- objectivism 27
- objectivist 25
- objurations 20
- objurgating 22
- objurgation 21
- objurgative 24
- objurgators 21
- objurgatory 24
- obligations 14
- obligements 16
- obliquation 22
- obliqueness 22
- obliquities 22
- obliquitous 22
- obliterator 13
- obliviously 19
- obmutescent 17
- obnubilated 16
- obsceneness 15
- obscenities 15
- obscurantic 17
- obscuration 15
- obscurement 17
- obscureness 15
- obscurities 15
- obsecrating 16
- observables 18
- observances 18
- observantly 19
- observative 19
- observators 16
- observingly 20
- obsidionary 17
- obsignating 15
- obsignation 14
- obsignatory 17
- obsolescent 15
- obsolescing 16
- obsoletions 13
- obsoletisms 15
- obstetrical 15
- obstinacies 15
- obstriction 15
- obstructers 15
- obstructing 16
- obstructors 15
- obtainments 15
- obtemperate 17
- obtestation 13
- obtruncated 16
- obtruncates 15
- obtrusively 19
- obtundities 14
- obturations 13
- obumbrating 18
- obumbration 17
- obvolutions 16
- occasioners 15
- occasioning 16
- occidentals 16
- occipitally 20
- occultation 15
- occupancies 19
- occurrences 17
- oceanariums 15
- oceanfronts 16
- ocellations 13
- ochlocratic 20
- ochlophobia 23
- ochlophobic 25
- octachordal 19
- octagonally 17
- octahedrite 17
- octahedrons 17
- octanedioic 16
- octapeptide 18
- octastichon 18
- octennially 16
- octillionth 16
- octingenary 17
- octodecimos 18
- octohedrons 17
- octonarians 13
- octonocular 15
- octopushers 18
- octothorpes 18
- octuplicate 17
- odonatology 16
- odontalgias 13
- odontalgies 13
- odontoblast 14
- odontocetes 14
- odontogenic 15
- odontograph 18
- odontolites 12
- odontophore 17
- oecological 16
- oecologists 14
- oecumenical 17
- oenological 14
- oenologists 12
- oenomancies 15
- oenophilies 16
- oenophilist 16
- oestradiols 12
- oestrogenic 14
- offenceless 19
- offenseless 17
- offertories 17
- offhandedly 25
- officemates 21
- officialese 19
- officialism 21
- officiality 22
- officiaries 19
- officiators 19
- officiously 22
- offprinting 20
- offsaddling 20
- offscouring 20
- offsettings 18
- offshorings 21
- oftennesses 14
- oleographic 19
- olfactology 20
- olfactories 16
- olfactorily 19
- oligarchies 17
- oligochaete 17
- oligochrome 19
- oligoclases 14
- oligomerous 14
- oligopolies 14
- oligopolist 14
- oligotrophy 20
- ombrogenous 16
- ombrometers 17
- ombrophiles 20
- ombrophobes 22
- omeprazoles 24
- ominousness 13
- ommatophore 20
- omnifarious 16
- omnificence 20
- omniformity 21
- omnipatient 15
- omnipotents 15
- omnisexuals 20
- onagraceous 14
- onboardings 15
- oncogeneses 14
- oncogenesis 14
- oncological 16
- oncologists 14
- oncoviruses 16
- oneirically 16
- oneirodynia 15
- oneiromancy 18
- oneiroscopy 18
- onerousness 11
- ongoingness 13
- onocentaurs 13
- onomasticon 15
- onomatology 17
- ontogeneses 12
- ontogenesis 12
- ontogenetic 14
- ontologists 12
- onychitises 19
- onychomancy 26
- onychophagy 28
- oojamaflips 25
- opalescence 17
- opeidoscope 18
- openability 18
- openhearted 17
- openmouthed 19
- operability 18
- operagoings 15
- operatising 14
- operativity 19
- operatizing 23
- operculated 16
- operettists 13
- operoseness 13
- operosities 13
- ophicalcite 20
- ophicleides 19
- ophidiarium 19
- ophiolaters 16
- ophiologies 17
- ophiologist 17
- ophiomorphs 23
- ophthalmias 21
- ophthalmist 21
- opinionates 13
- opinionator 13
- opinionists 13
- opisometers 15
- opisthosoma 18
- oppignerate 16
- oppignorate 16
- oppilations 15
- opponencies 17
- opsimathies 18
- ozonosphere 25
- optimalises 15
- optimalized 25
- optimalizes 24
- optionality 16
- optokinetic 19
- optologists 14
- optometries 15
- oracularity 16
- oraculously 16
- orangewoods 16
- orbiculares 15
- orbicularis 15
- orbicularly 18
- orbiculated 16
- orchardists 17
- orchestrina 16
- orchestrion 16
- orchidology 21
- orchiectomy 23
- ordainments 14
- ordinariest 12
- ordinations 12
- ordonnances 14
- orecchiette 18
- orecchietti 18
- oreographic 19
- oreological 14
- oreologists 12
- orepearched 19
- orepearches 18
- organicisms 16
- organicists 14
- organisable 14
- organisings 13
- organistrum 14
- organizable 23
- organizings 22
- organograms 15
- orientalise 11
- orientalism 13
- orientality 14
- orientalize 20
- orientators 11
- orienteered 12
- originalism 14
- originalist 12
- originative 15
- originators 12
- ornamentals 13
- ornamenters 13
- ornamenting 14
- ornamentist 13
- ornithopods 17
- ornithopter 16
- ornithosaur 14
- orographers 17
- orographies 17
- orphanhoods 20
- orpheoreons 16
- orthoborate 16
- orthocaines 16
- orthocenter 16
- orthocentre 16
- orthoclases 16
- orthodontia 15
- orthodoxies 22
- orthodromic 19
- orthoepical 18
- orthoepists 16
- orthogenics 17
- orthognathy 21
- orthographs 20
- orthonormal 16
- orthopedias 17
- orthopedies 17
- orthophyres 22
- orthophyric 24
- orthopnoeas 16
- orthopraxes 23
- orthopraxis 23
- orthoprisms 18
- orthopteran 16
- orthopteron 16
- orthoptists 16
- orthorexias 21
- orthoscopes 18
- orthoscopic 20
- orthostatic 16
- orthostichy 22
- orthotropic 18
- oscillative 16
- oscillators 13
- oscillatory 16
- oscillogram 16
- oscitancies 15
- osculations 13
- osmiridiums 16
- osmometries 15
- osmotically 18
- ostensively 17
- ostensories 11
- ostensorium 13
- osteoblasts 13
- osteoclases 13
- osteoclasis 13
- osteoclasts 13
- osteocollas 13
- osteodermal 14
- osteodermic 16
- osteogenies 12
- osteogenous 12
- osteography 20
- osteologies 12
- osteologist 12
- osteopathic 18
- osteophytes 19
- osteophytic 21
- osteoplasty 16
- osteotomies 13
- ostleresses 11
- ostracisers 13
- ostracising 14
- ostracizers 22
- ostracizing 23
- ostracoderm 16
- ostracodous 14
- ostreaceous 13
- ostreophage 17
- ostreophagy 20
- ostrichisms 18
- ostrichlike 20
- othernesses 14
- otherwhiles 20
- otherworlds 18
- otoplasties 13
- ototoxicity 23
- otterhounds 15
- ouananiches 16
- oughtnesses 15
- ouroboroses 13
- ouroscopies 15
- outachieved 20
- outachieves 19
- outbalanced 16
- outbalances 15
- outbargains 14
- outbitching 19
- outbleating 14
- outblessing 14
- outblooming 16
- outbluffing 20
- outblushing 17
- outblusters 13
- outboasting 14
- outbragging 16
- outbrawling 17
- outbrazened 23
- outbreaking 18
- outbreathed 17
- outbreathes 16
- outbreeding 15
- outbullying 17
- outbursting 14
- outcapering 16
- outcasteing 14
- outcatching 19
- outcaviling 17
- outcavilled 17
- outcharging 18
- outcharming 19
- outcheating 17
- outclassing 14
- outclimbing 18
- outcoaching 19
- outcompeted 18
- outcompetes 17
- outcounting 14
- outcraftied 17
- outcrafties 16
- outcrawling 17
- outcrossing 14
- outcrowding 18
- outdazzling 31
- outdebating 15
- outdelivers 15
- outdesigned 14
- outdoorsier 12
- outdoorsmen 14
- outdragging 15
- outdreaming 15
- outdressing 13
- outdrinking 17
- outdropping 17
- outduelling 13
- outdwelling 16
- outercourse 13
- outfeasting 15
- outfielders 15
- outfighting 19
- outfiguring 16
- outfittings 15
- outflanking 19
- outflashing 18
- outflinging 16
- outfloating 15
- outflowings 18
- outflushing 18
