Ingenious

1. a. Mental; intellectual.
2. a. Possessed of genius, or the faculty of invention; skillful or promp to invent; having an aptitude to contrive, or to form new combinations; as, an ingenious author, mechanic.
3. a. Proseeding from, pertaining to, or characterized by, genius or ingenuity; of curious design, structure, or mechanism; as, an ingenious model, or machine; an ingenious scheme, contrivance, etc.
4. a. Witty; shrewd; adroit; keen; sagacious; as, an ingenious reply.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.