- The definition of a sure thing is something definite, guaranteed or certain to happen.
An example of a sure thing is that a person will have to pay interest on credit card debt if he carries a balance and the card charges interest.
sure thing definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- something considered certain to win, succeed, etc.
- all right; OK: used interjectionally
sure thing definition by American Heritage Dictionary
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
An outcome that is certain or assured; a certainty: “Any respectable contrarian is tempted to think a recession is a sure thing” (Floyd Norris).interjection Informal
Of course; certainly: Sure thing, I'll be there!
sure thing - Phrases/Idioms
a sure thing. A certainty, as in Making the bestseller list has been a sure thing for Stephen King. This usage originally alluded to a bet that one could not lose. [First half of 1800s]
Yes indeed, certainly, as in Are you coming tonight?—Sure thing! This use of the idiom as an interjection dates from the late 1800s.