noun

1. Someone possessing extraordinary intelligence or skill; especially somebody who has demonstrated this by a creative or original work in science, music, art etc.

   “I think that would qualify as not smart, but genius... and a very stable genius at that!”

2. Extraordinary mental capacity.

3. Inspiration, a mental leap, an extraordinary creative process.

   “a work of genius.”

Synonyms: tutelary deity

adjective

1. Ingenious, brilliant, very clever, or original.

   “What a genius idea!”