what is the japanese word for belt

The most common Japanese word for “belt” is:

• ベルト (beruto) – this is the standard word for a waist belt with Western-style clothes.

• 帯 (おび, obi) – this is the traditional cloth sash worn with kimono and some martial arts uniforms.

So, if you mean an everyday pants belt, ベルト is usually correct, and if you mean a kimono or martial-arts style belt, 帯 (obi) is the right word.