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be a sure thing
be a sure thing
To be certain to happen; to be a probable outcome. It's a sure thing that they'll hire you—I just confirmed it with the recruiter. She's the most popular candidate, so it's a sure thing that she'll become student council president. Trust me, when it comes to gambling, there's no sure thing.
be a sure thing
(American & Australian informal) to be certain to happen or to succeed It's a sure thing she'll buy the most expensive jacket in the store. His re-election is hardly a sure thing.