There are a total of 1460 9-letter words starting with the letter 'o', and the number may vary in different dictionaries. You can specify the dictionary and order.
- occluding 21
- overdoses 14
- ostriches 14
- outwitted 14
- ordaining 14
- overlords 15
- osteology 14
- overrules 15
- overblown 21
- ovalbumin 22
- optimizes 24
- olfaction 17
- orebodies 13
- oppresses 15
- oxygenase 20
- opercular 17
- operettas 12
- offertory 17
- overreach 18
- oestrogen 12
- outfitter 13
- overwrite 16
- originary 13
- orthotics 14
- osteopath 14
- ovulatory 17
- ozonation 20
- oogenesis 12
- overdoing 17
- oxycodone 23
- overturns 15
- oleoresin 11
- overborne 17
- octahedra 15
- oxygenate 21
- oenothera 12
- officinal 20
- objectify 29
- outstrips 13
- overshoes 15
- ophiolite 15
- overreact 16
- ostracods 13
- orangutan 14
- oblations 14
- outlasted 12
- ombudsmen 21
- outranked 16
- oviparous 17
- oldtimers 14
- organotin 10
- orgiastic 14
- oncologic 19
- optimised 16
- overprint 17
- obsessing 15
- overhears 15
- onrushing 16
- organiser 12
- obfuscate 19
- oxacillin 22
- ossicular 14
- overslept 17
- overwater 16
- omnirange 16
- overstock 20
- octopuses 16
- outpacing 19
- obscenely 19
- obbligato 18
- orientate 10
- otologist 12
- overlayer 16
- oxidising 20
- oratories 9
- ovigerous 13
- outboards 14
- overbuilt 18
- omnivores 17
- offscreen 19
- outriders 11
- outgroups 16
- ovenproof 20
- outgunned 16
- oleanders 12
- ordinaire 11
- overdosed 15
- offloaded 18
- occulting 20
- ossifying 17
- oystermen 15
- opposable 19
- overissue 14
- occultist 17
- overspray 18
- overtired 14
- offstreet 15
- officiant 19
- outgoings 15
- outliving 18
- opacified 19
- outshines 13
- ostensive 14
- offseason 16
- ommatidia 16
- overvalue 19
- obtruding 17
- outraging 15
- ostracize 21
- osteotome 12
- odometers 13
- ostracode 13
- ovulating 18
- omelettes 13
- offprints 19
- occurrent 17
- occupance 23
- oversteps 16
- overladen 16
- overmatch 21
- overglaze 25
- outgassed 13
- orography 18
- ozokerite 22
- obsoleted 14
- overeager 15
- outlander 13
- obstruent 14
- overcrowd 20
- olympiads 19
- optronics 16
- odalisque 21
- organises 12
- orthoptic 17
- oversexed 21
- outputted 15
- orangeade 13
- osmometer 15
- opsonized 23
- overflown 21
- orangerie 12
- optimates 15
- ossuaries 10
- oriflamme 19
- obcordate 16
- outcastes 13
- overawing 19
- orificial 16
- onionskin 16
- obscurest 16
- oncolytic 16
- outscored 14
- overheats 15
- ownerless 14
- overlarge 16
- oystering 14
- overspend 18
- ontogenic 16
- overspent 17
- onomastic 16
- osteocyte 14
- obtention 14
- overskirt 17
- outdoorsy 13
- orogenies 12
- oviductal 19
- ocellated 15
- overusing 17
- odourless 12
- otolithic 15
- overspill 18
- otoscopic 18
- oysterman 15
- oilstones 11
- obtrusion 14
- outplayed 17
- osmometry 17
- otorrhoea 12
- overcasts 16
- overbuild 19
There are 1460 9-letter words starting with the letter o in the well-known word game dictionary, 1096 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 1401 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 1060 in the Words with Friends (WWF) dictionary.
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