The story
From sure + fire, originally used to denote the efficacy of firearms (rifles) to fire.
Etymology from Wiktionary, CC BY-SA 4.0.
sure-fire
Today it means: Guaranteed to work or happen. Full definition →
Today it means: Guaranteed to work or happen. Full definition →
From sure + fire, originally used to denote the efficacy of firearms (rifles) to fire.
Etymology from Wiktionary, CC BY-SA 4.0.