Words Starting With O Ending in S With A

1403 words starting with O and ending in S and containing A, from 4 to 15 letters. Pick a length to see its full list.

  • oaks8
  • oars4
  • oats4
  • oafs7
  • obas6
  • ocas6
  • odas5
  • okas8
  • omas6
  • opas6
  • oasis5
  • oafos8
  • oases5
  • oasts5
  • oaths8
  • oaves8
  • obias7
  • octas7
  • odahs9
  • odals6
  • ofays11
  • ogams8
  • ohias8
  • okays12
  • okras9
  • oktas9
  • ollas5
  • omdas8
  • ooaas5
  • opahs10
  • oceans8
  • operas8
  • organs7
  • oakers10
  • oakies10
  • oakums12
  • oaters6
  • obangs9
  • obeahs11
  • occams12
  • ocreas8
  • octads9
  • octals8
  • octans8
  • offals12
  • oflags10
  • oghams12
  • oilgas7
  • okapis12
  • okaras10
  • obtains9
  • onwards11
  • oranges8
  • orgasms10
  • orleans7
  • orphans12
  • outages8
  • outlaws10
  • ovaries10
  • oakmoss13
  • oarages8
  • oarless7
  • obelias9
  • oblasts9
  • oblates9
  • ochreas12
  • ocicats11
  • octanes9
  • octants9
  • octaves12
  • operates10
  • orchards14
  • overseas11
  • oakiness12
  • oaklings13
  • oakwoods16
  • oarlocks14
  • oarweeds12
  • oatcakes14
  • oatmeals10
  • obviates13
  • ocarinas10
  • occamies14
  • oceanids11
  • octagons11
  • octanols10
  • octaplas12
  • odalisks13
  • odallers9
  • oddballs12
  • obstacles13
  • occasions13
  • occupants15
  • officials17
  • operators11
  • organisms12
  • organizes19
  • originals10
  • ornaments11
  • outbreaks15
  • oakleaves16
  • oakmosses15
  • oanshaghs16
  • oarfishes15
  • obdurates12
  • obeahisms16
  • oblations11
  • obligants12
  • obligates12
  • obligatos12
  • operations12
  • operatives15
  • ordinances13
  • organisers11
  • organizers20
  • originates11
  • outrageous11
  • oafishness16
  • oakenshaws20
  • oakinesses14
  • oasthouses13
  • obbligatos15
  • obduracies15
  • obeisances14
  • obfuscates17
  • obituaries12
  • objurgates20
  • oblateness12
  • obligators13
  • obscurants14
  • obligations14
  • occupations17
  • obdurations14
  • obituarists13
  • objurations20
  • objurgators21
  • obliterates13
  • obnubilates15
  • observables18
  • observances18
  • observators16
  • obstinacies15
  • obtainments15
  • obtruncates15
  • obturations13
  • occasioners15
  • occidentals16
  • occupancies19
  • oceanariums15
  • oceanfronts16
  • observations17
  • oafishnesses18
  • oarsmanships19
  • obdurateness15
  • obfuscations19
  • objectivates26
  • objurgations22
  • oblatenesses14
  • obliquations23
  • obliterators14
  • obscurations16
  • obsecrations16
  • observancies19
  • obsignations15
  • obstipations16
  • obstropalous16
  • obtemperates18
  • obtestations14
  • obumbrations18
  • occultations16
  • organisations14
  • organizations23
  • obliterations15
  • obnubilations17
  • obscurantisms19
  • obscurantists17
  • observatories18
  • obstetricians17
  • obstinateness15
  • obstreperates17
  • oceanologists16
  • ochlophobiacs27
  • octingenaries16
  • octogenarians16
  • octosyllabics22
  • octosyllables20
  • odonatologies15
  • odontophobias21
  • odontophorans19
  • offhandedness24
  • obduratenesses17
  • obedientiaries17
  • objectivations28
  • obligatoriness17
  • observableness21
  • occasionalisms20
  • occasionalists18
  • occidentalises19
  • occidentalisms21
  • occidentalists19
  • occidentalizes28
  • oceanographers22
  • oceanographies22
  • odonatologists16
  • odontographies21
  • oesophagitises20
  • olallieberries16
  • oleaginousness15
  • oleomargarines17
  • olfactologists20
  • observabilities22
  • obsessionalisms19
  • obstinatenesses17
  • obtainabilities19
  • occasionalities19
  • octocentenaries19
  • odontostomatous18
  • oesophagoscopes25
  • offhandednesses26
  • oligocythaemias26
  • omnifariousness20
  • omnisexualities24
  • omoplatoscopies23
  • openheartedness21
  • operationalisms19
  • operationalists17
  • operativenesses20
  • ophthalmologies26
  • ophthalmometers27
  • ophthalmoscopes29

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Words Starting With O Ending in S With A: Questions

How many words starting with O and ending in S and containing A are there?

There are 1,403 words starting with O and ending in S and containing A in our dictionary, ranging from 4 to 15 letters long.

What is the longest word starting with O and ending in S and containing A?

OBSERVABILITIES is one of the longest at 15 letters, which is as long as these lists run.

What are some common words starting with O and ending in S and containing A?

OPERATIONS, OPERATIVES, ORDINANCES are among the most familiar words starting with O and ending in S and containing A. Pick a word length to see the full list for that length.

Are these words starting with O and ending in S and containing A valid in Scrabble and Words With Friends?

Every word is drawn from a tournament word list, so most are playable everywhere. Open the list for a given length to filter it down to Scrabble US (NWL2023), Scrabble UK (CSW24) or Words With Friends.