- (often initial capital letter) a member of a feudal Japanese society of mercenary agents, highly trained in martial arts and stealth (ninjutsu), who were hired for covert purposes ranging from espionage to sabotage and assassination.
- a person who is expert or highly skilled in a specified field or activity (often used attributively): marketing ninjas; ninja gamers.
Origin of ninja
< 1960–65; Japanese, equivalent to nin- endure + -ja, combining form of -sha person (< Middle Chinese, equivalent to Chinese rěn + zhě)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ninja
He was gonna join the fight, you know, really he was, got his ninja getup fitted and everything.The Scared Widdle Kitty of ISIS
December 12, 2014
She is as confident over the phone as she is climbing across one of Ninja Warriors many daunting obstacles.
Can Kacy Catanzaro be the first woman to win 'American Ninja Warrior'?
At an even five feet tall, Catanzaro is the shortest competitor in this season of Ninja Warrior, but average for a gymnast.
He has proven to be a computer whiz, earning the nickname “Ninja Coder.”‘Nuke Mom’ Marisa Sketo Kirsh on Her Vindication
December 5, 2013
- (sometimes capital) a person skilled in ninjutsu, a Japanese martial art characterized by stealthy movement and camouflage
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012