8-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.

  • original 9
  • official 16
  • ordinary 12
  • opposite 12
  • offering 15
  • occasion 12
  • obsessed 11
  • occurred 13
  • overcome 15
  • offended 16
  • occupied 15
  • opponent 12
  • organize 18
  • overtime 13
  • operator 10
  • overseas 11
  • ordering 10
  • olympics 17
  • observed 14
  • organism 11
  • overdose 12
  • overhead 15
  • obstacle 12
  • outsider 9
  • obedient 11
  • offender 15
  • opposing 13
  • outdoors 9
  • observer 13
  • orthodox 19
  • override 12
  • offshore 17
  • omelette 10
  • overlook 15
  • organise 9
  • oblivion 13
  • oriental 8
  • outbreak 14
  • ointment 10
  • outdated 10
  • overtake 15
  • optimism 14
  • outgoing 10
  • oriented 9
  • obsolete 10
  • outraged 10
  • ornament 10
  • outright 12
  • orphaned 14
  • optimist 12
  • ordained 10
  • outhouse 11
  • overcame 15
  • obituary 13
  • overflow 17
  • outburst 10
  • obstruct 12
  • outlawed 12
  • overalls 11
  • overload 12
  • optional 10
  • overpass 13
  • overhear 14
  • openness 10
  • overcoat 13
  • obsidian 11
  • overdone 12
  • overhaul 14
  • overture 11
  • outreach 13
  • overturn 11
  • outwards 12
  • operatic 12
  • outlined 9
  • overview 17
  • outsmart 10
  • organist 9
  • overkill 15
  • overpaid 14
  • ordnance 11
  • outlived 12
  • olympiad 16
  • outgrown 12
  • overcast 13
  • obliging 12
  • offstage 15
  • overlord 12
  • overseer 11
  • overheat 14
  • outlying 12
  • oncoming 13
  • orgasmic 13
  • objector 19
  • overland 12
  • overtook 15
  • outweigh 15
  • overcook 17
  • outfield 12
  • omission 10
  • overrule 11
  • onscreen 10
  • occupant 14
  • overwork 18
  • oxymoron 20
  • overused 12
  • outflank 15
  • oncology 14
  • odorless 9
  • optician 12
  • outshine 11
  • overstay 14
  • overbite 13
  • operetta 10
  • occupier 14
  • outboard 11
  • overshot 14
  • onlooker 12
  • operable 12
  • overhang 15
  • offshoot 17
  • opulence 12
  • outbound 11
  • overhand 15
  • ordinate 9
  • odometer 11
  • outskirt 12
  • outthink 15
  • overstep 13
  • overseen 11
  • optimize 21
  • oxytocin 20
  • overripe 13
  • offsides 15
  • oligarch 14
  • oblation 10
  • occident 13
  • outvoted 12
  • omitting 11
  • ontology 12
  • oliphant 13
  • outdoing 10
  • outmoded 12
  • oversize 20
  • outcaste 10
  • oxidized 26
  • oiliness 8
  • outspend 11
  • overplay 16
  • oxidizer 25
  • oleander 9
  • outshone 11
  • overdraw 15
  • overfeed 15
  • overtone 11
  • outdrive 12
  • overbill 13
  • overlaid 12
  • overmuch 18
  • outsized 18
  • overtire 11
  • oversold 12
  • oximeter 17
  • outdrink 13
  • overgrow 15
  • outstrip 10
  • overrate 11
  • oilcloth 13
  • oilpaper 12
  • ossified 12
  • overbear 13
  • overfall 14
  • overrode 12
  • organdie 10
  • oakiness 12
  • oaklings 13
  • oanshagh 15
  • oarlocks 14
  • oatcakes 14
  • oathable 13
  • obduracy 16
  • obdurate 11
  • obduring 12
  • obeahing 14
  • obelised 11
  • obelises 10
  • obelisks 14
  • obelisms 12
  • obelizes 19
  • obesogen 11
  • obeyable 15
  • objected 20
  • objuring 18
  • obligees 11
  • obligers 11
  • obligors 11
  • obliqued 20
  • obliquer 19
  • obliques 19
  • obliquid 20
  • obscener 12
  • obscured 13
  • obscurer 12
  • obscures 12
  • obsequie 19
  • observes 13
  • obsesses 10
  • obsessor 10
  • obsigned 12
  • obturate 10
  • obtusely 13
  • obverted 14
  • obviable 15
  • obviated 14
  • obviates 13
  • obviator 13
  • obvolute 13
  • ocarinas 10
  • occamies 14
  • occipita 14
  • occiputs 14
  • occluded 14
  • occluder 13
  • occludes 13
  • occlusal 12
  • occulted 13
  • occulter 12
  • occultly 15
  • occupate 14
  • occupies 14
  • oceanaut 10
  • oceanids 11
  • ocellate 10
  • ocherier 13
  • ochering 14
  • ocherish 16
  • ocheroid 14
  • ocherous 13
  • ochidore 14
  • ochreate 13
  • ochreous 13
  • ochriest 13
  • ockerism 16
  • ockodols 15
  • ocotillo 10
  • octagons 11
  • octangle 11
  • octanols 10
  • octantal 10
  • octaplas 12
  • octapody 16
  • octarchy 18
  • octaroon 10
  • odograph 15
  • ozonizes 26
  • odontist 9
  • odontoid 10
  • odontoma 11
  • odorants 9
  • odorized 19
  • odorizer 18
  • odorizes 18
  • odourful 12
  • odylisms 14
  • odyssean 12
  • odysseys 15
  • oecology 14
  • oedemata 11
  • oedipean 11
  • oeillade 9
  • oenology 12
  • oenomels 10
  • oenophil 13
  • oerlikon 12
  • oersteds 9
  • oestrins 8
  • oestriol 8
  • oestrone 8
  • oestrous 8
  • oestrual 8
  • oestrums 10
  • offbeats 16
  • offcasts 16
  • offences 16
  • offenses 14
  • offerees 14
  • offerers 14
  • offguard 16
  • officers 16
  • offishly 20
  • offloads 15
  • offprint 16
  • offramps 18
  • offscums 18
  • offsider 15
  • offtakes 18
  • offtrack 20
  • oftenest 11
  • ofttimes 13
  • oghamist 14
  • ogreisms 11
  • ogresses 9
  • ogrishly 15
  • ohmmeter 15
  • oilbirds 11
  • oilcamps 14
  • oileries 8
  • oilfield 12
  • oilfired 12
  • oilgases 9
  • oilholes 11
  • oilproof 13
  • oilseeds 9
  • oilskins 12
  • oilstone 8
  • oiltight 12
  • oinology 12
  • oinomels 10
  • oiticica 12
  • okeydoke 20
  • okimonos 14
  • oldening 10
  • oldsquaw 21
  • oldsters 9
  • oldstyle 12
  • oldwives 15
  • olearias 8
  • oleaster 8
  • olefiant 11
  • olefines 11
  • olefinic 13
  • olestras 8
  • olfacted 14
  • olibanum 12
  • olicooks 14
  • oligemia 11
  • oligemic 13
  • oligists 9
  • oligomer 11
  • oliguria 9
  • ondatras 9
  • ondogram 12
  • ongoings 10
  • onionier 8
  • onioning 9
  • oniscoid 11
  • onliners 8
  • onloaded 10
  • onsteads 9
  • onstream 10
  • ontogeny 12
  • onwardly 15
  • onychias 16
  • onychite 16
  • onychium 18
  • oogamete 11
  • oogamies 11
  • oogamous 11
  • oogenies 9
  • oogonial 9
  • oogonium 11
  • oolachan 13
  • oolakans 12
  • oolichan 13
  • oologies 9
  • oologist 9
  • oomiacks 16
  • oompahed 16
  • oomycete 15
  • oophoron 13
  • oophytes 16
  • oophytic 18
  • oosperms 12
  • oosphere 13
  • oospores 10
  • oosporic 12
  • oothecae 13
  • oothecal 13
  • ooziness 17
  • opalesce 12
  • opalines 10
  • opalised 11
  • opalized 20
  • opaquely 22
  • opaquest 19
  • opaquing 20
  • openable 12
  • opencast 12
  • openings 11
  • openside 11
  • openwork 17
  • operably 15
  • operands 11
  • operants 10
  • operated 11
  • operates 10
  • opercele 12
  • opercula 12
  • opercule 12
  • ophidian 14
  • ophiuran 13
  • ophiuras 13
  • ophiurid 14
  • opiating 11
  • opificer 15
  • opinable 12
  • opinions 10
  • opiumism 14
  • opopanax 19
  • oporices 12
  • opossums 12
  • oppidans 13
  • oppilant 12
  • oppilate 12
  • opponens 12
  • opposers 12
  • oppugned 14
  • oppugner 13
  • opsimath 15
  • opsonify 16
  • opsonins 10
  • opsonise 10
  • opsonium 12
  • opsonize 19
  • optative 13
  • opticist 12
  • optimate 12
  • optimise 12
  • optimums 14
  • optioned 11
  • optionee 10
  • optology 14
  • optronic 12
  • opulency 15
  • opuluses 10
  • opuntias 10
  • opuscles 12
  • opuscula 12
  • opuscule 12
  • oquassas 17
  • oracling 11
  • oracular 10
  • oragious 9
  • oralisms 10
  • oralists 8
  • orangery 12
  • orangest 9
  • orangier 9
  • orangish 12
  • orarians 8
  • orarions 8
  • orariums 10
  • orations 8
  • oratorio 8
  • oratress 8
  • oratures 8
  • orbitals 10
  • orbiters 10
  • orbities 10
  • orbiting 11
  • orchards 14
  • orchella 13
  • orcheses 13
  • orchesis 13
  • orchilla 13
  • orchises 13
  • orchitic 15
  • orchitis 13
  • orcinols 10
  • ordainer 9
  • ordalian 9
  • ordalium 11
  • orderers 9
  • ordinals 9
  • ordinand 10
  • ordinant 9
  • ordinars 9
  • ordinees 9
  • ordurous 9
  • orective 13
  • oreganos 9
  • oreodont 9
  • oreology 12
  • oreweeds 12
  • orexises 15
  • organics 11
  • organity 12
  • organons 9
  • organums 11
  • organzas 18
  • orgasmed 12
  • orgastic 11
  • orgiasts 9
  • orgulous 9
  • oribatid 11
  • orichalc 15
  • orielled 9
  • orienter 8
  • orifexes 18
  • orifices 13
  • origamis 11

More 8 letter words