Countable Nouns Starting with OP and Containing AT

This list gathers 26 English countable nouns starting with OP and containing AT, such as Operation, Operator, Optimization, Operative, Opiate, Optative and Operatorship. Use the sorting controls below to organize entries by length, or consult our noun grammar guide to review singular and plural count rules.

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Starts with OPA
1 words
opacification
Starts with OPE8 words
operation
operator
operative
operatorship
operationalist
operativity
operationist
operatrix
Starts with OPH
2 words
ophthalmostatometer
ophiolater
Starts with OPI4 words
opiate
opinionator
opisthopulmonate
opisthobranchiate
Starts with OPP4 words
oppilation
oppilative
oppignoration
oppigneration
Starts with OPS3 words
opsonization
opsimath
opsonification
Starts with OPT4 words
optimization
optative
optimates
optimate

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