Countable Nouns That Start with OPE

Browse 27 English countable nouns starting with the prefix OPE, including Open, Operation, Opening, Operator, Opera, Opener and Operative. Sort these count nouns with singular and plural forms by letter count for ESL grammar practice, determiner usage, and plural spelling, or consult our noun grammar guide.

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Starts with OPEI
1 words
opeidoscope
Starts with OPEN
6 words
open
opening
opener
opencast
openwork
openside
Starts with OPEP
1 words
opepe
Starts with OPER
19 words
operation
operator
opera
operative
operetta
operand
operant
operon
operculum
operagoer
operatorship
opercular
operationalist
operativity
operationist
operettist
operosity
opercule
operatrix

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