don'ts, customs, rules, or regulations that forbid something: The boss has a long list of don'ts that you had better observe if you want a promotion.Cf. do1 (def. 56). Don ' t is the standard contraction for do …

Challenge yourself in 16 different languages. Define 'DONT'. See more meanings of 'DONT' with examples.

USAGE don't is the standard contraction for do not.

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