Countable Nouns Starting with O and Containing AI

This list gathers 16 English countable nouns starting with O and containing AI, such as Oxtail, Obtainment, Ordainment, Ordainer, Overpaint, Overstrain and Overpainting. 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 OB
2 words
obtainment
obtainer
Starts with OR
2 words
ordainment
ordainer
Starts with OU
2 words
outpainting
ouabain
Starts with OV9 words
overpaint
overstrain
overpainting
overclaim
overgrain
oversail
overstain
overgrainer
overhair
Starts with OX
1 words
oxtail

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