Certain and Sure-fire

Certain adjective - Known but not named.

Sure-fire is a synonym for certain. In some cases you can use "Sure-fire" instead an adjective "Certain". informal substitute

Nearby Words: certainty, certainly

Sure-fire adjective - Certain to be successful.

Certain is a synonym for sure-fire in dependable topic. You can use "Certain" instead an adjective phrase "Sure-fire".