ingenious

adjective3

1. •
   Of a person, displaying genius, ingenuity 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; characterized by ingenuity; witty.

   • He sent me an ingenious reply to an email.