won't

What you don't know won't hurt you.

something that you say which means that if you do not know about a fact or a problem, you do not worry about it. 'Tell me how much you spent on the car, then.' 'No, what you don't know won't hurt you.'

See also: don't, hurt, know

someone/something won't bite (humorous)

something that you say in order to tell someone not to be frightened of someone or something. I think you should talk to your uncle about this. Go on, he won't bite.

See also: bite

won't hear a word (said) against someone/something

if you won't hear a word said against someone or something, you refuse to believe anything bad about them. He's completely infatuated with the woman and won't hear a word said against her.

See also: against, hear, word