Countable Nouns Starting with OP and Containing IS

Explore 30 verified English countable nouns starting with OP and containing IS, including Optimist, Opportunist, Optometrist, Ophthalmologist, Oppositionist, Operationalist and Opinionist. Browse these count nouns with singular and plural forms below, or review singular and plural count rules in our noun grammar guide.

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Starts with OPE3 words
operationalist
operationist
operettist
Starts with OPH10 words
ophthalmologist
ophthalmist
ophiologist
ophiophilist
ophthalmoscopist
ophthalmomycosis
ophthalmodiagnosis
ophthalmomyositis
ophthalmoneuritis
ophthalmorrhexis
Starts with OPI11 words
opinionist
opisthosoma
opisthotonos
opisthobranch
opisthograph
opisometer
opisthography
opisthodomos
opisthopulmonate
opisthobranchiate
opisthocoelian
Starts with OPP
2 words
opportunist
oppositionist
Starts with OPT4 words
optimist
optometrist
opticist
optologist

•Browse Countable Nouns by Letter (A to Z)

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ABCDEFGHIJKLMNOPQRSTUVWXYZ
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