Idioms

bet bottom dollar

bet (one's) bottom dollar

To be totally certain that something will happen or prove true (so much so that one would hypothetically risk one's last dollar betting on it). I lost my umbrella, so you can bet your bottom dollar on it raining tomorrow! I bet my bottom dollar that Kevin will be late tonight—he's never on time! Well, we know the rest of the family has gotten to town, so if Mom's calling you repeatedly, I'd bet my bottom dollar they're making her miserable.
See also: bet, bottom, dollar
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.

bet one's bottom dollar

 and bet one's life
Fig. to be quite certain (about something). (A bottom dollar is the last dollar.) I'll be there. You bet your bottom dollar. I bet my bottom dollar you can't swim across the pool. You bet your life I can't swim that far.
See also: bet, bottom, dollar
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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