You can be sure; absolutely. ("Betcha" is a colloquial contraction of "bet you," even though it is used redundantly after "you.") A: "Hey Frank, do you want to come with us to the movies?" B: "You betcha I do!" A: "Is it OK if Frank brings his girlfriend?" B: "You betcha! Tommy's bringing Sarah as well, so it's no problem at all."
See also: betcha
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Inf. Yes!; You can be sure of it! (Literally, You bet, you.) Will I be there? You betcha. Can I? You betcha!
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
You betcha!(ˈju ˈbɛtʃə)
interj. Yes!; You can be sure of it! (Literally, You bet, you.) Will I be there? You betcha.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.