Simple Definition of surefire
: certain not to fail : sure to be successful
Full Definition of surefire
: certain to get successful or expected results <a surefire recipe>
Examples of surefire
The movie is a surefire hit with teenagers.
There is no surefire way to predict the outcome.
First Known Use of surefire
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Thesaurus: All synonyms and antonyms for "surefire"
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