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Also,. You can be absolutely sure, as in You bet your ass I'll be there, or You can bet your sweet life that was Bill with another woman, or Are you coming?—You bet I am. All these phrases in effect mean that you can be so sure of something that you can wager your body or life or valuables on it; ass is considered vulgar, and bottom dollar means “last dollar.” [Colloquial; second half of 1800s]
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
