dare

don't you dare

I will be very angry at you if you do. "I'm going to tell Billy what you said about him." "Don't you dare! "

See also: don't

how dare you do something

I am very surprised and shocked by what you are doing. How dare you show up at my wedding?

Usage notes: usually shows that you think someone's behavior is very wrong: How dare he accuse us of lying!

See also: how

I dare say

I am quite certain. Oh, I dare say Caroline and I will find some way to fill the time while you go off shopping.

See also: say