I'll bet he wa'n't sorry when Sadie shows up on deck and waves for us to come on.
I'll bet they don't get through the first case; I'll bet it's a cry.
Bet almost sang as she accompanied Jenny through the Warrington streets.
Well, I bet it was—cause she jes' went by here a-sparklin'!'
Before we could reply he said: “I bet you are the two boys from the Aven.”
I had a bet on a mule which would have won if the procession had been reversed.
"I knew it—I'd ha' bet a bar-skin he'd fetch it," cried a third.
If I ever get the chance to do anything for you in return, you bet I'll do it, no matter what it costs me!
The player next the blind is the first to declare his bet; in which, of course, he is entirely governed by circumstances.
But you bet he didn't open his mouth when he seen me lookin'!
bet 1590s, in the argot of petty criminals; probably aphetic of abet, or from obsolete beet "to make good," from O.E. bætan "make better, arouse, stimulate," from P.Gmc. *baitjanan. The original notion is perhaps "to improve" a contest by wagering on it, or it is from the "bait" sense in abet. Used since 1852 in various Amer.Eng. slang assertions (cf. you bet "be assured," 1857). Related: Betting.