[shoo r-fahyuh r, shur-]


sure to work; foolproof: a surefire moneymaking scheme.

Origin of surefire

First recorded in 1915–20; sure + fire Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for sure-fire

foolproof, certain, excellent, fail-safe, good, infallible, reliable

Examples from the Web for sure-fire

Contemporary Examples of sure-fire

Historical Examples of sure-fire

British Dictionary definitions for sure-fire



(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

Word Origin and History for sure-fire



also sure-fire, by 1864, American English, from sure + fire (v.). Originally of rifles.

Online Etymology Dictionary, © 2010 Douglas Harper