Uncountable Nouns Starting with OP and Containing A

This list gathers 70 English uncountable nouns starting with OP and containing A, such as Operation, Operating, Opera, Optimization, Opaque, Opacity and Opal. Use the sorting controls below to organize entries by length, or consult our noun grammar guide to check quantifier and measurement rules.

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Starts with OPA7 words
opaque
opacity
opal
opaqueness
opalescence
opaline
opacification
Starts with OPE15 words
operation
operating
opera
operetta
operability
operatics
openheartedness
operatorship
operagoing
operationalism
openhandedness
operativeness
operativity
openability
operationism
Starts with OPH24 words
ophthalmology
ophidiophobia
ophthalmia
ophthalmoscopy
ophthalmoplegia
ophthalmitis
ophiophilia
ophthalmometry
ophiolatry
ophthalmotonometry
ophthalmomycosis
ophicalcite
ophthalmodiagnosis
ophthalmomyositis
ophthalmoneuritis
ophthalmoblennorrhea
ophthalmocarcinoma
ophthalmophobia
ophthalmophthisis
ophidiobatrachia
ophthalmomyotomy
ophthalmorrhexis
ophthalmophlebotomy
ophthalmomalacia
Starts with OPI5 words
opinionativeness
opinionatedness
opisthography
opisthognathism
opisthognathidae
Starts with OPO4 words
opoponax
opobalsam
opotherapy
opopanax
Starts with OPP5 words
oppugnancy
opposability
oppilation
oppignoration
oppigneration
Starts with OPS3 words
opsonization
opsimathy
opsonification
Starts with OPT5 words
optimization
optimality
optionality
optative
optimisticalness

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