Adjective. 1: something guaranteed. Example: a sure thing. 2: something true. 3: confident. Example: sure of yourself. 4: an effective way of doing something. Example: a surefire way. Adverb. 1: undoubtedly so. Example: this show is an amazing place. 2: an American term for yes. Example: is it okay if I have an ice cream?. Sure.
