ingenuity
/ˌɪndʒəˈn(j)uːəti/noun
Cleverness and skill at solving hard problems in fresh, inventive ways.
Example sentences
- “It took real ingenuity to repair the engine with spare parts.”
- “Engineers showed remarkable ingenuity in building the bridge in just six months.”
Oddly, this is the noun that goes with 'ingenious', not 'ingenuous'. English inherited the mismatch and kept it.