General:
* Resourcefulness: This emphasizes the ability to find creative solutions to problems, especially when resources are limited.
* Creativity: This highlights the innovative and original thinking associated with ingenuity.
* Cleverness: This emphasizes the quick and intelligent thinking involved in ingenuity.
More specific:
* Imagination: This focuses on the ability to envision new possibilities.
* Originality: This highlights the uniqueness and novelty of an ingenious idea.
* Innovation: This emphasizes the practical application of ingenious ideas.
* Invention: This focuses on the creation of something entirely new.
Ultimately, the best synonym for ingenuity depends on the specific nuance you want to convey.