There are a total of 1360 10-letter words starting with the letter 'o', and the number may vary in different dictionaries. You can specify the dictionary and order.
- overpowers 20
- offshoring 21
- oxygenator 22
- otological 17
- osteolytic 16
- outwitting 17
- organisers 13
- osculating 18
- overmature 18
- overcooked 22
- osteocytes 15
- organismal 17
- overfished 20
- outflowing 21
- osteolysis 13
- oestradiol 12
- orcharding 17
- overshoots 16
- overfilled 20
- outrunning 17
- offsprings 22
- oestrogens 13
- overtaxing 24
- overplayed 21
- oblateness 15
- overstayed 17
- ophiolites 15
- obfuscated 21
- organicism 19
- overdosing 18
- occultists 18
- outsmarted 15
- obtainment 18
- optimising 19
- officiates 19
- outyielded 16
- ordonnance 17
- obsoletely 17
- opaqueness 24
- ozonolysis 22
- outnumbers 19
- osteophyte 17
- obstruents 15
- oxymoronic 26
- overdamped 22
- ornithosis 13
- overfunded 21
- objectless 26
- outworking 21
- octopamine 20
- overdriven 20
- oleoresins 12
- oophoritis 15
- outlanders 14
- overaction 18
- outstation 12
- overlayers 17
- odontology 17
- overwrites 17
- overextend 23
- overpaying 22
- otologists 13
- optimizers 25
- outmatched 20
- obeisances 17
- obturation 15
- outlasting 15
- overground 19
- outcompete 20
- overflying 23
- overnights 19
- overeaters 14
- ophiolitic 19
- organicity 18
- ostracised 14
- overbought 22
- ommatidium 21
- overdesign 18
- outbidding 19
- outranking 19
- outshining 17
- orogenesis 13
- orphanhood 19
- oviposited 18
- overrating 17
- overprints 18
- overtasked 19
- oxygenases 21
- otherwhere 17
- organicist 16
- ovulations 17
- onomastics 17
- openhanded 19
- observably 23
- overbooked 22
- observator 15
- obfuscates 20
- overacting 20
- obligately 19
- overstocks 21
- operculate 18
- overmantel 19
- orthoptics 18
- oratorians 10
- overcomers 20
- ophiuroids 17
- oversizing 23
- obdurately 18
- outselling 16
- offbalance 24
- overleaped 19
- overbuying 23
- outproduce 19
- overpassed 18
- osmiridium 18
- orangewood 17
- ornateness 12
- osculation 16
- overarched 20
- observants 18
- obturators 14
- outworkers 18
- oracularly 18
- overseeded 16
- outreaches 16
- overpraise 17
- overpacked 25
- ophicleide 20
- orientates 11
- officiants 20
- osculatory 17
- organology 18
- overviewed 22
- overvalues 20
- opacifying 24
- odiousness 13
- overdubbed 23
- orthogenic 16
- odontalgia 15
- orthotists 12
- obscurants 18
- outsources 15
- organosols 11
- oligopsony 19
- overmanned 20
- odalisques 22
- oversewing 20
- occipitals 20
- overreacts 17
- orthotropy 18
- oleophilic 17
- overissued 16
- officering 22
- ouananiche 18
- overlength 20
- oceanarium 18
- obturating 17
- omphalitis 19
- opacifiers 19
- orthopraxy 25
- osteoderms 13
- overlooker 19
- overexpose 24
- outrightly 18
- outcrossed 15
- ordinaires 11
- outclasses 15
- overstrung 18
- outerspace 17
- oxycephaly 30
- overmaster 17
- overdrying 20
- obediences 18
- outbalance 19
- orthograde 15
- overstrike 18
- oversimple 21
- overreport 17
- opsonizing 26
- ordinately 14
There are 1360 10-letter words starting with the letter o in the well-known word game dictionary, 904 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 1287 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 939 in the Words with Friends (WWF) dictionary.
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