Injury sustained whilst in the act of sneaking or attempting to sneak.
When creeping around in dark and unfamliar surroundings it is easy to cause yourself ninjury.
by thebathtubsophist January 09, 2012
Top Definition
1. injuries caused by ninja attacks.
Those weren't regular injuries on the pirates, those were ninjuries caused by the ninja known as Debs
by Wild and Witless May 18, 2006
an injury of unkown origin, thus being attributed to a ninja
"Man check out this ninjury on my shoulder! how the hell did that happen?!"

"You got ninjured bad"
by Oscarararararararara February 04, 2010
the act or process of being injured by a ninja
He was in the field picking peaches from a tree when he was ambushed and suffered a ninjury.
by Otrant May 14, 2006
injury of unexplained origin, often attributed to inebriated activities.
where'd all these bruises come from? that was a big night last night. Damn ninjury.
by tasteyface July 27, 2010
Harmful and painful acts inflicted upon ones self while having ninjanuity more moments.
I have an awesome skill set, however even the pros still get not ninjuries.
by d3vilsr3j3ct82 April 11, 2015
When you get injured by a ninja and least expect it.....Then again they are so sneaky you never expect it.
Dude I was walking down the street and got jump kicked in the face and didn't even see it coming. I had to go to the hospital due to my ninjury.

Past tense: I was at the hospital because I was Ninjured and I didn't even see it coming.
by mpdc November 02, 2011

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