警官|けいかんkeikan[0]heiban (flat)

1. nounpolice officer; policeman; constable
   ２０人にんの警官けいかんが現場げんばに現あらわれた。↗

   Twenty police have arrived on the scene.

• Synonym巡査じゅんさWrittenWritten/formal prose: the lowest rank of police officer; also used loosely for rank-and-file patrol officers.
• SynonymおまわりさんCasualAn affectionate, colloquial way to call a police officer, typical of children's speech and everyday conversation.
• Synonym警察官けいさつかんNeutralThe formal full name for a police officer, i.e. a civil servant who performs police duties; mostly in written and legal texts.
• SynonymポリスCasualA colloquial loanword, mostly seen in compounds such as 「ポリスマン」; rare in everyday speech.
• Synonym警察けいさつNeutralNeutral term for the police as an organization, but it can also refer to individual officers, as in 「警察に届ける」「警察が来た」.
• SynonymおまわりCasualA casual, colloquial way to refer to a police officer; like 「お巡りさん」 but less affectionate.
• Related官憲かんけんWrittenWritten/formal prose for the government authorities or officials in charge of public order, often with an oppressive nuance.
• RelatedさつCasualSlang for the police, with an underworld flavor; usually written 「サツ」.
• Relatedその筋そのすじWrittenA written-style euphemism for the authorities concerned, often hinting at the police, as in 「その筋のお達し」.

For an individual officer, 「警官」 is the usual word. Use 「お巡りさん」 for an affectionate touch, 「警察官」 as the formal full name, 「警察」 for the force or in general statements, and 「サツ」 in slang.

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

1. 警察官けいさつかんの通称つうしょう。狭義きょうぎには巡査じゅんさを指さす。