Where Does Redouble Come from?

The word redouble comes from French re- plus doubler, "to double". So to redouble one's efforts really means to double them again, to further emphasise or reinforce them beyond whatever doubling you may have done before.

Does redouble mean quadruple?

A: The verb “redouble” has been an acceptable term since the mid-1400s, when it did indeed mean to quadruple. But today “redouble” generally means to double or increase greatly, or to double an opponent's double in bridge.

What does redouble mean in bridge?

A redouble is a call that can be made when the last call in the current auction (other than a Pass) is a double. Like a double, it uses up no space on the bidding ladder. It can have one of three different meanings, depending on the auction: 1) For penalty. ... It may scare them into running back to a bid of their suit.