Countable Nouns Starting with OP and Containing U

This list gathers 29 English countable nouns starting with OP and containing U, such as Opportunity, Opaque, Optimum, Opus, Opportunist, Opossum and Operculum. Use the sorting controls below to organize entries by length, or consult our noun grammar guide to review singular and plural count rules.

Refine list...
JUMP:
Sort:
Group:
Case:
View:
JUMP TO:
Select any word to view available definitions & photosSelect any word for details
Starts with OPA
1 words
opaque
Starts with OPE
3 words
operculum
opercular
opercule
Starts with OPH
8 words
ophiura
ophiurid
ophiuroid
ophiuran
ophthalmoneuritis
ophidiarium
ophthalmophyllum
ophthalmoleucoscope
Starts with OPI
2 words
opinicus
opisthopulmonate
Starts with OPO
1 words
opossum
Starts with OPP
6 words
opportunity
opportunist
oppidum
oppugnancy
oppugner
oppugnant
Starts with OPS
1 words
opsonium
Starts with OPT
2 words
optimum
optocoupler
Starts with OPU
5 words
opus
opuntia
opuscule
opusculum
opulus

•Browse Countable Nouns by Letter (A to Z)

Select a starting letter to browse countable 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.