Definition of surefire
- a surefire recipe
The movie is a surefire hit with teenagers.
There is no surefire way to predict the outcome.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'surefire.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: certain not to fail : sure to be successful
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