| ninja | (noun) a class of 14th century Japanese who were trained in martial arts and were hired for espionage and assassinations | - |
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| (noun) a member of the ninja who were trained in martial arts and hired for espionage or sabotage or assassinations; a person skilled in ninjutsu | - |
| ninjitsu | (noun) the traditional Japanese method of espionage; involves stealthy movements and the use of camouflage | Synonyms: ninjutsu |
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| ninjutsu | (noun) the traditional Japanese method of espionage; involves stealthy movements and the use of camouflage | Synonyms: ninjitsu |
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