winning technique (sumo); clincher; decisive move
Primarily a sumo term for the technique with which a wrestler wins a bout. By extension, used figuratively for a decisive move or clincher in other competitive or argumentative contexts.
The yokozuna won with a yorikiri as his winning technique.
The clincher in the argument was her single remark.
決まり手 is the specific technique that officially decides the outcome of a sumo bout, while 取り口 refers to a wrestler's overall style and manner of fighting.
Standard kanji spelling; used in sumo contexts and by extension in other competitive or decisive situations.
Variant kanji spelling; less common than 決まり手.
Variant kanji spelling; rarely used.
Compound of 決まり (kimari, 'decision, settlement') + 手 (te, 'hand, technique'). The term originated in sumo to denote the technique that decides a match.