Cleaned and tested! A ninja (忍者, English: /ˈnɪn.dʒə/,[1] Japanese: [ɲiꜜɲ.dʑa][2]) or shinobi (忍び, Japanese: [ɕinobi][2]) was a spy and infiltrator in pre-modern Japan. [3] The functions of a ninja included siege and infiltration, ambush, reconnaissance, espionage, deception, and later bodyguarding.
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