english
1
general::
Phrase(s): Loose lips sink ships. Don’t talk carelessly because you don’t know who is listening. (From wartime. Literally, "Don’t reveal even the location of a loved one on a ship, because the location could be communicated to the enemy by a spy.") • You never know who is going to hear what you say and how they will use what they hear. Remember, loose lips sink ships.
McGrawhill's American Idioms And Phrasal Verbs