To sneak out of place without anyone knowing.

To leave a place early without saying bye to anyone to avoid them making you stay
I don't want to drink anymore so I'm going to ninja out before anyone notices.

Danny always tries to ninja out early because he cannot hang.
by LW0WW May 2, 2011
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when in a tight situation, solve it in the most ninja like way as possible.
dude, chris was about to get capped by niko, but it he was able to ninja it out and it was cool.
by servant of the boognish November 6, 2009
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to win a fight in an unorthadox yet very effective way
Did you see Matt bust out the ninja skills on Jim? I saw his brains and everything!
by Adrian Salazar May 9, 2005
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