Top definition
To do in the fashion of a ninja.
I'm ninjing like a pro, baby!
by Cath arsis June 03, 2004
Get the mug
Get a Ninj mug for your cat Paul.
2
To have sex, usually very quietly and in a fashion that will avoid detection. From the phrase "Ninja that bitch."
Most often heard in the gerund form "ninjing".
by Fern, Defender of Trees July 16, 2009
Get the mug
Get a Ninj mug for your Facebook friend Riley.
3
ninj (v.): to act in such a manner that could be construed as causing trickery, disruption, and/or pain on those who instill one's wrath
Ninj (n.): any one of a number of people who enjoy, and in fact take delight in, causing mischief and trickery on those who deserve it; i.e., mauling someone
v. "I'm gonna ninj you, you bloody prick, if you ever say something like that again!"

n. "I am so a ninj!"
by ninjgirl April 13, 2011
Get the mug
Get a Ninj mug for your mama Larisa.
4
anything you want it to mean fitting the situation.
Damn you ninjed up that shot.
You look like a Ninj.
This Concert is hella Ninj.
by Trav is gay April 26, 2007
Get the mug
Get a Ninj mug for your dog Riley.
6
The verb form of Ninja. To act like, have the characteristics of, or be a Ninja.
Stop ninjing, you keep sneaking up on me and scaring me.
by Rachel Applefield January 24, 2018
Get the mug
Get a Ninj mug for your friend Riley.
7
To steal or take wrongly; to hijack; to snatch; most synonymous with "to jack"

One who ninjes is a ninjer, or in ghetto parlance a ninja.
that guy totally ninjed my pen
by usethisword September 15, 2007
Get the mug
Get a ninj mug for your buddy Vivek.