Meaning of blow (it)! In English

• 0 an expression of anger:

  • Oh, blow it! I've forgotten to invite Paul to the party.

• 1 to fail to take advantage of an opportunity by doing or saying something wrong:

  • I really blew it when I turned down that job offer, didn't I?

• 2 infmlto lose an opportunity to do something by doing or saying the wrong thing:

  • I guess I blew it when I told my teacher I didn't care what grade she gave me.