Ninja has no definition as Ninja cannot be defined
by The only real ninja here March 1, 2010

by Sir Jesus H Christ January 25, 2005

He is a fortnite twitch streamer and all he dose is sit on his ass all day and show off his skins on fortnite. He never spends time with his wife and just plays with drlupo and tictactim. He also has a desease called ligma but when u say it to him he will get salty and bam you
by StopNinja September 8, 2018

Ninja can be mistaken for those guys who run around at night in black however, similar is it’s true definition. Which is a criminal who robs and joins gangs these “ninjas” are well known for being loud and abnoxious.
by Komodo Food July 10, 2023

Person 1: Did you watch that basketball game last night?
Person 2: Ya, omg, that move that that guy did was like, so ninja!!!
Persoon 1: IKR!!!!
Person 2: Ya, omg, that move that that guy did was like, so ninja!!!
Persoon 1: IKR!!!!
by Mr. Hedgehog December 22, 2010

Adj.
Full of ninjas or involving ninjas.
*Most commonly used in reference to an anime or manga, but is not exclusive to either.
Full of ninjas or involving ninjas.
*Most commonly used in reference to an anime or manga, but is not exclusive to either.
1. Naruto is my favorite ninjaful anime of all time.
2. This years anime convention was the best due to it's ninjafulness.
2. This years anime convention was the best due to it's ninjafulness.
by Melissa the random samurai September 12, 2008

HOLY SHIT ITS NINJA
by Awesome5367261 January 1, 2020
