ingenuity

Etymology

From Latin ingenuitās.

noun

1. The ability to solve difficult problems, often in original, clever, and inventive ways.
   The pyramids demonstrate the ingenuity of the ancient Egyptians.
   Poverty is the mother of ingenuity.
   Ingenuity is one of the characteristics of a beaver.
   The heavy freight traffic which shares the double line between Paddington and Wolverhampton with the passenger traffic has taxed the ingenuity of the timetable planners. 1960 February, R. C. Riley, “The London-Birmingham services - Past, Present and Future”, in Trains Illustrated, page 103
2. (now rare) Ingenuousness; honesty, straightforwardness