Watch (one's) tongue spoken verb phrase
To be cautious in one's words.
I don't like the way you talk to me like that. You better watch your tongue.
Someone should tell James to watch his tongue around here. These people are no joke.
To behave or act more carefully than one did before.
Used to say that you should be cautious if you want to be safe
Used to say that someone becomes less guarded or vigilant or ceases being wary of potential problems or danger.
To describe the act of being prepared to act with little advance notice.
The verb "watch" should be conjugated according to its tense.