Ingenious

Adjective

1. Of a person, displaying genius or brilliance; inventive.

   "This fellow is ingenious; he fixed a problem I didn’t even know I had."

2. Of a thing, characterized by genius; cleverly contrived or done.

   "That is an ingenious model of the atom."

3. Showing originality or sagacity; witty.

   "He sent me an ingenious reply to an email."