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not breathe a word

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not breathe a word (about someone or something)

 and not breathe a word of it

Fig. to keep a secret about someone or something. Don't worry. I won't breathe a word about this matter. Please don't breathe a word about Bob and his problems. Don't worry. I won't breathe a word of it.

See also: breathe, not, word

not breathe a word

Not reveal a secret, keep concealed, as in You must promise not to breathe a word of what I'm about to tell you. This phrase relies on the verb breathe as meaning "to utter," a usage dating from the late 1500s.

See also: breathe, not, word