Translation

The Japanese word for "Mouse" is nezumi ネズミ.

Romaji ne zu mi
Hiraganaねずみ
Katakanaネズミ
Kanji 鼠
School Level ✕

Loan-word

The word "Mouse" katakanized would be mausu マウス.
Romaji ma u su
Katakanaマウス
Hiraganaまうす

Synonyms

Rat.
House Mouse.