noun \ˈnin-jə, -(ˌ)jä\

: a fighter who is trained in the Japanese martial arts

plural ninja also ninjas

Full Definition of NINJA

:  a person trained in ancient Japanese martial arts and employed especially for espionage and assassinations

Origin of NINJA

Japanese, from nin- persevere, conceal, move stealthily + -ja person
First Known Use: 1964


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