Adjective
surefire (comparative more surefire, superlative most surefire)
Alternative form of sure-fire
But there is only one surefire method of proper pattern recognition, and that is science. Michael Shermer
An education is a more surefire guarantee that you have possibilities opened to you. Jonathan Taylor Thomas
Vengeance is the act of turning anger in on yourself. On the surface it may be directed at someone else, but it is a surefire recipe for arresting emotional recovery. Jane Goldman
There's never a surefire good career move except doing good work. Seth Green
Surefire things are deadening to the human spirit. Dorothea Lange
Investing in early childhood nutrition is a surefire strategy. The returns are incredibly high. Anne M. Mulcahy