bet on it

bet on it

To be certain that something will happen (so much so that one would bet money on it). Oh, Kevin's never on time, so he will be late tonight—you can bet on it.
See also: bet, on

(you can) bet on it

it is very likely this will happen or be true Sales will go up - you can pretty much bet on it - because if there's one thing Americans know how to do, it's shop.
Opposite of: don't bet on it
See also: bet, on