ingenuity
n. uncountablen. the ability to solve problems in a clever or creative way. You use this when someone thinks of a smart new idea to fix a tricky situation.
n. the quality of being clever, original, and inventive, especially when applied to solving technical problems or overcoming obstacles.
The team showed great ingenuity in fixing the broken engine.
With limited supplies on the island, the survivors had to use their ingenuity to build a working shelter.
The architectural design is a masterpiece of engineering ingenuity, managing to support the massive glass dome without the use of visible internal pillars.
From Latin ingenuitās.
Typically used as an uncountable noun to describe a personal quality; occasionally used with 'of' to describe a specific clever act.