surefire

[ shoor-fahyuhr, shur- ]
/ ˈʃʊərˌfaɪər, ˈʃɜr- /

adjective

sure to work; foolproof: a surefire moneymaking scheme.

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Origin of surefire

First recorded in 1915–20; sure + fire
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for surefire

British Dictionary definitions for surefire

sure-fire

adjective

(usually prenominal) informal certain to succeed or meet expectations; assured
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012