要よう注ちゅう意い人じん物ぶつ

noun

person requiring special attention; person to be wary of; person under surveillance; dangerous person

Used in security, police, or institutional contexts for someone flagged as a potential risk or needing monitoring. Can range from official surveillance targets to individuals who warrant caution in everyday situations.

• 警けい察さつは彼かれを要よう注ちゅう意い人じん物ぶつとしてマークしている。

  The police have flagged him as a person requiring special attention.

• あの客きゃくはクレームが多おおいので、店みせでは要よう注ちゅう意い人じん物ぶつ扱あつかいだ。

  That customer complains a lot, so the store treats him as someone to be wary of.