Definitions

sure-fire

ADJECTIVE

dependable

Synonyms

STRONGEST

foolproof

WEAK

certain excellent fail-safe good infallible reliable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Sure-fire formulas of the past had lost their potency.

From Los Angeles Times • Jul. 31, 2019

Sure-fire sign that your team’s star pitcher arrived at spring training grossly overweight: He just underwent Papa John surgery.

From Seattle Times • Apr. 2, 2015

Sure-fire "lifter" at St. Paul is Hines's setting of the Lord's Prayer.

From Time Magazine Archive

"Sure-fire hit," Mr. Rooney pronounced, as he spat on the stage floor behind the curtain.

From Blue-grass and Broadway by Daviess, Maria Thompson