Ingenuity is the clever ability to solve problems in original and resourceful ways, especially when resources are limited or the situation seems impossible. When engineers showed incredible ingenuity by using duct tape and spare parts to help bring the damaged Apollo 13 spacecraft safely home, they were inventing solutions on the spot with whatever they had available.

Ingenuity combines creativity with practical problem-solving. A student shows ingenuity when she figures out how to build a strong bridge for a class project using only paper and glue, or when she creates a new game with friends using a tennis ball and some chalk because they don't have the equipment for the game they wanted to play. It's about being resourceful and inventive when the obvious solution isn't available.

The word captures a special quality beyond basic intelligence or knowledge: the ability to see possibilities others miss and push past obstacles. Someone with ingenuity sees possibilities others miss and doesn't let obstacles stop them. When a baker runs out of eggs but figures out how to make the recipe work with applesauce instead, that's ingenuity. When a group of kids turns cardboard boxes into an elaborate fort complete with windows and tunnels, they're showing ingenuity.

Throughout history, ingenuity has driven human progress: from the first person who figured out how to make fire, to inventors who created the wheel, the printing press, and the computer. Ingenious is the adjective form, describing something remarkably clever.