jujitsu \joo-JIT-soo\, noun:
1. The ability to accomplish a task with no apparent effort or resistance.
2. Method developed in Japan of defending oneself without the use of weapons by using the strength and weight of an adversary to disable him.
She stared at me as though I were some kind of bizarre math whiz, and she feared I was about to do some jujitsu calculus on her.
-- Stephen White, Blinded
Edmund has always had a way of turning things around on their head, practicing his own brand of moral jujitsu, Claire's holy zeal for humanity in the abstract!
-- Francine du Plessix Gray, World Without End
Jujitsu comes from the Japanese martial art of the same name, with the word being a combination of ju, "soft," and jitsu, "technique."