Definition of Genius

Noun: genius (geniuses,genii) jeen-yus or jee-nee-us [N. Amer], jee-nee-us [Brit]

Someone who has exceptional intellectual ability and originality
"Mozart was a child genius";
- mastermind, brain, brainiac [N. Amer], Einstein, brainbox [Brit]
Unusual mental ability
- brilliance
Someone who is dazzlingly skilled in any field
- ace, adept, champion, sensation, maven, mavin, virtuoso, hotshot, star, superstar, whiz, whizz, wizard, wiz, megastar
Exceptional creative ability
- wizardry
A natural talent
"he has a genius for interior decorating";
- flair