Countable Nouns That Start with O and End with AL

Explore 25 verified English countable nouns starting with O and ending with AL, including Official, Original, Optional, Oral, Oval, Ordeal and Orbital. 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 OA
1 words
oatmeal
Starts with OB
1 words
obsessional
Starts with OC3 words
occidental
occipital
octennial
Starts with OD
1 words
odal
Starts with OF
2 words
official
officinal
Starts with OL
1 words
oleochemical
Starts with OM
1 words
omnisexual
Starts with OP
2 words
optional
opal
Starts with OR11 words
original
oral
oriental
ordeal
orbital
ornamental
ordinal
orval
organomercurial
orinasal
orthodiagonal
Starts with OV
2 words
oval
overarousal

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