Nouns Starting with OP and Containing OS

Browse 22 valid English nouns starting with OP and containing OS, from Opposition, Opossum, Opposer, Ophthalmoscope, Oppositionist, Ophthalmoscopy and Oppositeness to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review pluralization and capitalization rules.

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Starts with OPE3 words
operosity
operoseness
opeidoscope
Starts with OPH8 words
ophthalmoscope
ophthalmoscopy
ophthalmoscopist
ophthalmomycosis
ophthalmostatometer
ophthalmodiagnosis
ophthalmomyositis
ophthalmoleucoscope
Starts with OPI3 words
opisthosoma
opisthotonos
opisthodomos
Starts with OPO
1 words
opossum
Starts with OPP7 words
opposite
opposition
opposer
oppositionist
oppositeness
opposability
oppositionism

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