Sure Fire

meaning definitly, of course. its gonna come out to be a good thing. positive.

boy A- dude okay were gonna go rob that chicken store, heres the plan
boy B- dude this plan is not sure fire!
boy A- yes it is! it is so sure fire! were gonna have all the chicken in the world!

by Just.Jenna August 1, 2008

Surefire

Great brand of tactical flashlights, often featured on CSI and used by the armed forces in Iraq.

My surefire is bright as hell and indestructible.

by Ze German November 4, 2007

Surefire

Surefire, most commonly used as "Surefire Way" is a word with similar meanings to efficient, or effective, although can have a negative connotation as well as a positive one.

"That's a surefire way to get caught."

by CoolCrafter February 14, 2021