Summary: Prefixes are key morphemes in English vocabulary that begin words. The prefix *super-* and its variant *sur-* mean "over." Examples using this prefix include [*super*]ior, [*super*]vise, [*sur*]name, and [*sur*]face. An easy way to remember that the prefix *super-* means "over" is through the comic book hero [*Super*]man, who is the man "over" all other men in terms of physical power.
