Countable Nouns Ending in CY and Containing FF

Browse 8 valid English countable nouns ending in CY and containing FF, from Efficiency, Efficacy, Inefficiency, Insufficiency, Sufficiency, Superefficiency and Supersufficiency to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.

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Starts with C
1 words
counterefficiency
Starts with E
2 words
efficiency
efficacy
Starts with I
2 words
inefficiency
insufficiency
Starts with S
3 words
sufficiency
superefficiency
supersufficiency

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