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 in a sentence
The movie is a surefire hit with teenagers.
There is no surefire way to predict the outcome.
First Known Use of surefire
Learn More about surefire
Thesaurus: All synonyms and antonyms for "surefire"
Seen and Heard
What made you want to look up surefire? Please tell us where you read or heard it (including the quote, if possible).