Meaning & use
no-no
Last updated
Something that is forbidden or strongly discouraged by custom, rule, or common sense.
See it in a sentence
Wearing white after Labor Day used to be considered a fashion no-no.
Talking during the performance is a definite no-no at this theater.
A note on using this word
An informal, reduplicated coinage built simply by doubling "no"; it is common in casual speech and writing but rare in formal contexts.
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