人殺し|ひとごろしhitogoroshi[0]heiban (flat)

1. nounmurder; murderer
   彼かれは、人殺ひとごろしも同然どうぜんだ。↗

   He is no better than a murderer.

• Synonym殺人さつじんNeutralNeutral term for the act of killing; the usual choice in news reports and legal writing. 「人殺し」 is more colloquial and doubles as a direct insult.
• Synonym殺害さつがいWrittenWritten/formal prose for killing someone, as in 「殺害された」. 「人殺し」 is the more colloquial word.
• Synonym殺しころしCasualColloquial word for killing, mostly used when talking about cases; detective jargon writes it 「コロシ」.
• Synonym殺人者さつじんしゃWrittenWritten/formal prose for a killer, stated more objectively; 「人殺し」 carries a tone of condemnation.
• Synonym殺害者さつがいしゃWrittenWritten/formal prose for someone who has killed another, but rare; 「殺人者」 or 「犯人」 is what you would normally say.
• Synonym殺人犯さつじんはんNeutralNeutral legal and news term for a murderer; 「人殺し」 is the more emotional way to say it.
• Antonym救命きゅうめいNeutralNeutral word for saving a life, as in 「救命ボート」; the opposite of 「人殺し」.
• Antonym助命じょめいWrittenWritten/formal prose for sparing someone's life, keeping them from death; the opposite of 「人殺し」.

For the act, news and legal writing use 「殺人」 or 「殺害」; for the culprit, 「殺人犯」. In speech, or to curse someone — 「この人殺し」 — use 「人殺し」. For saving lives, say 「救命」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 何なんらかの方法ほうほうで人ひとを殺ころすこと。殺人さつじん。また、人ひとを殺ころした者もの。