Artificial intelligent assistant

Word for pulling a punch in karate During karate training my (English) karate teacher uses a word that sounds like "son dame". He says that this describes the action of stopping your punch just before making contact with the opponent. I cannot find this word or any variant spelling of it on any English language karate site. Nor can I find any Japanese equivalent on any Japanese site. I've tried , , . I tried replacing with , , etc. I'm sure half of these English-Japanese karate words are made up. Anyone have any ideas?

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