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A miniature and or little ninja. Can also be spelled Ninji.
Hey did you see that little ninjy run up that roof?

Nope.
by realpeterpanda January 16, 2017
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2
Ninja-like. Having the traits or qualities of a ninja.
He is so ninjy, they’ll never see him until it’s too late.
by Uncle Chung July 04, 2019
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