genius

(noun) someone who has exceptional intellectual ability and originality. Synonyms: mastermind, brain, brainiac, Einstein. Examples: "Mozart was a child genius." "He's smart but he's no einstein."

(noun) unusual mental ability. Synonyms: brilliance.

(noun) someone who is dazzlingly skilled in any field. Synonyms: ace, adept, champion, sensation, maven, mavin, virtuoso, hotshot, star, superstar, whiz, whizz, wizard, wiz.

(noun) exceptional creative ability. Synonyms: wizardry.

(noun) a natural talent. Synonyms: flair. Examples: "He has a flair for mathematics." "He has a genius for interior decorating."