Crossword Genius

Person skilled in ninjutsu (5)

Ross

I believe the answer is:

ninja

(Other definitions for ninja that I've seen before include "Eastern agent" , "Person skilled in Japanese martial art" , "Fourteenth-century Japanese assassin" , "Japanese stealth fighter" , "Japanese expert in stealth and martial arts" .)

I've seen this clue in The Daily Mail and The Mirror.
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