How do you say "heavy" in Japanese?

In Japanese, "heavy" is 重い (Omoi). It is a adjective pronounced "oh-moh-ee".

Listen to the pronunciation:

Pronunciation

重い is written in kanji and hiragana. Romanised as Omoi, it sounds roughly like "oh-moh-ee" to an English ear.

Example sentence

このカバンはとても重いです。

Kono kaban wa totemo omoi desu.

This bag is very heavy.

Usage notes

Omoi (重い) is an i-adjective meaning heavy or serious. It describes physical weight as well as heavy topics, serious illnesses, and burdensome feelings. Its opposite is karui (light).

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Questions about 重い

How do you pronounce 重い?

重い is romanised as Omoi. Say it roughly like "oh-moh-ee" in English. Each Japanese syllable has even weight, so keep the rhythm steady.

Is 重い formal or casual?

重い is an i-adjective. The form shown is the plain form, which works in casual speech. To make it polite, add desu at the end of the sentence. The word itself does not change.

How is 重い written in Japanese?

重い is written using kanji and hiragana. Kanji characters carry the core meaning; any hiragana or katakana that follow show grammatical endings.

This word is part of the vocabulary taught in the Japanese language learning game Noun Town, where words are introduced through play rather than memorisation.