ingenuity

noun3

1. •
   The ability to solve difficult problems in original, clever, and inventive ways; ingeniousness.

   • The pyramids demonstrate the ingenuity of the ancient Egyptians.
   • Poverty is the mother of ingenuity.
2. •
   An ingenuous action or thought.
3. •
   (no longer used) Ingenuousness; honesty, straightforwardness

   • And therefore I apply my selfe to ingenuitie, and ever to speake truth and what I think[…]. — 1603