bet one's life exclamation 1verb 1forms 2 exclamation1 •You bet; damn straight.Q: Do you think the Dallas Cowboys will go all the way this year? A: You bet your life they will! verb1 •Synonym of bet one's boots.You can play a lot of tricks with a glass eye because you can take it out and pop it back in again any time you like. You can bet your life Mrs Twit knew all the tricks. — 1979 formsbetting one's life · bets one's life