surefire

THESAURUS

surefire

assured of success, calculable, certain, coming, crowned with success, dependable, faithful, faithworthy, fast, firm, fortunate, invincible, made, on the up-and-up, on top, out in front, predictable, prosperous, reliable, secure, solid, sound, stable, staunch, steadfast, steady, substantial, succeeding, successful, sure, triumphant, trustworthy, trusty, unfailing, well-founded, well-grounded