Countable Nouns That Start with O and End with RA

Explore 12 verified English countable nouns starting with O and ending with RA, including Opera, Orchestra, Okra, Obscura, Osetra, Ossetra and Oenothera. 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 OB
1 words
obscura
Starts with OE
1 words
oenothera
Starts with OK
1 words
okra
Starts with ON
2 words
onagra
ondatra
Starts with OP
2 words
opera
ophiura
Starts with OR
1 words
orchestra
Starts with OS
2 words
osetra
ossetra
Starts with OU
1 words
ouvirandra
Starts with OV
1 words
ovipara

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