ドブネズミ

noun

brown rat; Norway rat; sewer rat

Refers specifically to Rattus norvegicus, the common large rat found in urban areas. Often carries a negative, dirty, or pest-like connotation.

• ドブネズミがゴミ置おき場ばにいた。

  There was a brown rat at the garbage area.

• ドブネズミは都と市し部ぶでよく見みられる。

  Brown rats are commonly seen in urban areas.

noun

dark gray; dirty gray

Describes a dull, dark gray color reminiscent of a sewer rat's fur. Often used for clothing or objects with a murky gray tone.

• 彼かれはドブネズミ色いろのコートを着きていた。

  He was wearing a dark gray coat.

noun

deceitful employee; unfaithful servant

Figurative, derogatory term for a disloyal or untrustworthy subordinate, likening them to a sneaky rat. Rare and somewhat dated; more common in older literature or dramatic speech.

• あの男おとこは会かい社しゃのドブネズミだ。

  That guy is a deceitful employee of the company.