- 1 [uncountable] unusually great intelligence, skill, or artistic ability the genius of Shakespeare a statesman of genius Her idea was a stroke of genius.
- 2[countable] a person who is unusually intelligent or artistic, or who has a very high level of skill, especially in one area a mathematical/comic, etc. genius He's a genius at organizing people. You don't have to be a genius to see that they are in love!
- 3[singular] genius for something/for doing something a special skill or ability He had a genius for making people feel at home.