Verb
breathe a word (third-person singular simple present breathes a word, present participle breathing a word, simple past and past participle breathed a word)
(idiomatic, chiefly in the negative) To divulge even part of a secret (usually used with a negative).
I warn you not to breathe a word of this to anyone, or else!
And lose, and start again at your beginnings, And never breathe a word about your loss. Rudyard Kipling
If you can make one heap of all your winnings And risk it on one turn of pitch-and-toss, And lose, and start again at your beginnings And never breathe a word about your loss. Rudyard Kipling