Nouns Starting with O and Containing AS

Explore 75 verified English nouns starting with O and containing AS, including Occasion, Orgasm, Oasis, Outcast, Offseason, Overcast and Overpass. Browse these naming words for people, places, and things below, or review pluralization and capitalization rules in our noun grammar guide.

Refine list...
JUMP:
Sort:
Group:
Case:
View:
JUMP TO:
Select any word to view available definitions & photosSelect any word for details
Starts with OA3 words
oasis
oast
oasthouse
Starts with OB
1 words
oblast
Starts with OC9 words
occasion
occasionalism
occasionalist
occasionality
octaplas
occasioner
octastyle
octastich
octastichon
Starts with OD
1 words
odontoblast
Starts with OF
2 words
offseason
offcast
Starts with OL
2 words
oleaster
oligoclase
Starts with OM
2 words
omakase
omasum
Starts with ON6 words
onomastics
onchocerciasis
onomasticon
onomastician
onomasiology
onomast
Starts with OP
2 words
opencast
ophthalmodiastimeter
Starts with OQ
1 words
oquassa
Starts with OR6 words
orgasm
orchardgrass
orthoclase
orgiast
orinasal
orchidocelioplasty
Starts with OS4 words
osteoblast
osteoclast
osteoplasty
osteoclasis
Starts with OT
2 words
otoplasty
otohemineurasthenia
Starts with OU9 words
outcast
outcaste
outgassing
outwash
outpass
oubaas
outtasking
outflash
outlash
Starts with OV21 words
overcast
overpass
overemphasis
overclass
overenthusiasm
overassessment
overassertiveness
overwash
overpersuasion
overprocrastination
overassertion
overhaste
overmeasure
overhastiness
oversteadfastness
overfastidiousness
overmasterfulness
overboastfulness
overlasciviousness
overrashness
overpassionateness
Starts with OX4 words
oxidase
oxygenase
oxidoreductase
oxyuriasis

•Browse Nouns by Letter (A to Z)

Select a starting letter to browse nouns
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWordsVocabulary HubPositive WordsNegative Words
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.