How to say “dark” in Japanese | 暗い (くらい、kurai) | い-Adjective

The Japanese vocabulary「暗い (くらい、kurai)」means “dark” and is an い-adjective. We will teach you the conjugation and the example sentences on this page.

Vocabulary Video

Please learn about the pronunciation before you learn the conjugations.

Dictionary & Plain Form, Polite Form

Key Word暗い暗いです
Hiraganaくらいくらいです
Romaji Readingkuraikurai desu
English Meaningdark
(Dictionary & Plain Form)
dark
(Polite Form)

It’s very dark outside.

そとはとても暗い。(Plain Form)
外はとても暗いです。(Polite Form)


I walked in the dark forest.

暗いもりあるきました。(Polite Form)

The adjective「暗い」is in plain form. However, this sentence is in polite form. We will teach you the details in our conversation lessons or mail support


I want to fix my gloomy personality.

暗い性格せいかくなおしたいです。(Polite Form)

The literal translation of「暗い」is “dark.” In this case, it means “gloomy.”

ない Form (Negative & Plain Form)

Key Word暗くない
Hiraganaくらくない
Romaji Readingkuraku nai
English Meaningnot dark
(Plain Form)

It’s not dark outside yet.

まだそとは暗くない。(Plain Form)

Negative & Polite Form

Key Word暗くないです暗くありません
Hiraganaくらくないですくらくありません
Romaji Readingkuraku nai desukuraku  arimasen
English Meaningnot dark
(Polite Form)
not dark
(Polite Form)

It’s not dark outside yet.

まだそとは暗くないです。(Polite Form)
まだ外は暗くありません。(Polite Form)

Past Tense & Positive

Key Word暗かった暗かったです
Hiraganaくらかったくらかったです
Romaji Readingkurakattakurakatta desu
English Meaningwas dark
(Plain Form)
was dark
(Polite Form)

It was dark yesterday morning.

昨日きのうあさは、暗かった。(Plain Form)
昨日の朝は、暗かったです。(Polite Form)

Past Tense & Negative

Key Word暗くなかった
Hiraganaくらくなかった
Romaji Readingkuraku nakatta
English Meaningwas not  dark
(Plain Form)
暗くなかったです暗くありませんでした
くらくなかったですくらくありませんでした
kuraku nakatta desukuraku arimasen deshita
was not  dark
(Polite Form)
was not  dark
(Polite Form)

It wasn’t dark outside yet.

そとはまだ暗くなかった。(Plain Form)
外はまだ暗くなかったです。(Polite Form)
外はまだ暗くありませんでした。(Polite Form)

て Form

Key Word暗くて
Hiraganaくらくて
Romaji Readingkurakute
English MeaningN/A

We cannot know the exact meaning without knowing the sentence.


It’s dark and cold outside.

そとは暗くてさむいです。(Polite Form)

Conditional Form & Positive

Key Word暗ければ
Hiraganaくらければ
Romaji Readingkurakereba
English Meaningif ~ am/is dark

If it’s dark outside, please go to turn on the garden lights.

そとが暗ければ、にわのライトをけてきてください。(Polite Form)

Conditional Form & Positive

Key Word暗くなければ
Hiraganaくらくなければ
Romaji Readingkuraku nakereba
English Meaningif ~ am/is not dark

If it’s not dark outside, I’ll go there by bicycle.

そとが暗くなければ、自転車じてんしゃかいます。(Polite Form)

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い-Adjectives