Countable Nouns Starting with O and Containing UN

Explore 22 verified English countable nouns starting with O and containing UN, including Opportunity, Ounce, Overrun, Opportunist, Overground, Overabundance and Overcount. Browse these count nouns with singular and plural forms below, or review singular and plural count rules in our noun grammar guide.

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Starts with OB
2 words
obtundent
obtundity
Starts with OM
1 words
omadhaun
Starts with OP3 words
opportunity
opportunist
opuntia
Starts with OR
1 words
orotundity
Starts with OS
2 words
osmund
osmunda
Starts with OT
1 words
otterhound
Starts with OU3 words
ounce
ouncer
outrunner
Starts with OV9 words
overrun
overground
overabundance
overcount
overpronunciation
overrunner
overdiscount
overlaunch
overdenunciation

•Browse Countable Nouns by Letter (A to Z)

Select a starting letter to browse countable nouns
ABCDEFGHIJKLMNOPQRSTUVWXYZ
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