Alternative form of sure-fire

Certainty. / That which makes sure; that which confirms; ground of confidence or security. / (law) A promise to pay a sum of money in the event that another person fails to fulfill an obligation.

superlative form of sure: most sure

Walking steadily, without stumbling; capable of finding good footing. / Confident and capable.

comparative form of sure: more sure

(law) A bond issued by one party, the surety, guaranteeing that he will perform certain acts promised by another or pay a stipulated sum, up to the bond limit, in lieu of performance, should the principle fail to perform.

plural of surety

In a surefooted manner

Surname of a Parthian noble family. / A general from this family. / A transliteration of the Armenian male given name Սուրեն (Suren).

(law) An accessory agreement through which one binds oneself for another already bound, either in whole or in part, as for one's debt, default or miscarriage; the assumption of liability for the obligations of another.