Countable Nouns That Start with OP and End with E

Explore 29 verified English countable nouns starting with OP and ending with E, including Opaque, Operative, Opiate, Opcode, Ophthalmoscope, Optative and Opaline. Sort these count nouns with singular and plural forms by word length for ESL grammar practice, determiner usage, and plural spelling below, or review singular and plural count rules in our noun grammar guide.

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Starts with OPA
3 words
opaque
opaline
opaleye
Starts with OPC
1 words
opcode
Starts with OPE
5 words
operative
openside
opercule
opepe
opeidoscope
Starts with OPH
8 words
ophthalmoscope
ophiolite
ophidiophile
ophite
ophidiophobe
ophicleide
ophicalcite
ophthalmoleucoscope
Starts with OPI
3 words
opiate
opisthopulmonate
opisthobranchiate
Starts with OPO
1 words
oporice
Starts with OPP
2 words
opposite
oppilative
Starts with OPT
5 words
optative
optionee
optime
optimate
optophone
Starts with OPU
1 words
opuscule

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