ETYM Latin ingeniosus, from ingenium innate or natural quality, natural capacity, genius: cf. French ingénieux. Related to Engine.
1. Possessed of genius, or the faculty of invention; skillful or prompt to invent; having an aptitude to contrive, or to form new combinations.
2. Proceeding from, pertaining to, or characterized by, genius or ingenuity; of curious design, structure, or mechanism.
3. Witty; shrewd; clever; keen; sagacious.