濃(こ)い

こい

i-adjective

thick, dense, strong

Conjugation

	Affirmative	Negative
Present	濃(こ)い	濃(こ)くない
Past	濃(こ)かった	濃(こ)くなかった
て form	濃(こ)くて	濃(こ)くなくて
Adverbial	濃(こ)く	—
Conditional ば	濃(こ)ければ	濃(こ)くなければ
Conditional たら	濃(こ)かったら	濃(こ)くなかったら

1. thick, dense

Having high concentration or intensity.

霧(きり)が濃(こ)い。

The fog is thick.

化粧(けしょう)が濃(こ)い。

The makeup is heavy.

2. dark, deep (color)

Rich or intense in color.

濃(こ)い緑(みどり)の葉(は)。

Deep green leaves.

濃(こ)い色(いろ)の服(ふく)。

Dark-colored clothes.

この青(あお)はもう少(すこ)し濃(こ)い方(ほう)がいい。

This blue would be better a bit darker.

3. strong (flavor)

Having a pronounced taste.

濃(こ)いコーヒー。

Strong coffee.

味(あじ)が濃(こ)い。

The flavor is strong.

この味噌汁(みそしる)は少(すこ)し濃(こ)いね。

This miso soup is a bit strong, isn't it.

濃(こ)い is an i-adjective meaning "thick," "dense," "dark" (color), or "strong" (flavor). It describes high concentration or intensity.

Forms

Adverbial: 濃(こ)く
Noun form: 濃(こ)さ (thickness, density)

Common collocations

濃(こ)い味(あじ): strong/rich flavor
濃(こ)いコーヒー: strong coffee
濃(こ)い色(いろ): dark color
化粧(けしょう)が濃(こ)い: heavy makeup
関係(かんけい)が濃(こ)い: close relationship

Similar words

濃(こ)い: thick, dense, strong, dark
薄(うす)い: thin, light, weak, pale

Usage: Can describe physical properties (density, color) or abstract qualities (relationships, experiences).

Related Words

Antonym: 薄(うす)い (thin, light, weak)

Compare: 深(ふか)い (deep)

Related: 濃厚(のうこう) (rich)

Compare: 濃密(のうみつ) (dense, rich, intense)

general

Added 2026.1.9 17:25 · Revised 2026.9.2 13:01

02000/02344_koi