寝 苦(ねぐる)しい

ねぐるしい

i-adjective

hard to sleep; restless (due to heat)

Conjugation

	Affirmative	Negative
Present	寝苦(ねぐる)しい	寝苦(ねぐる)しくない
Past	寝苦(ねぐる)しかった	寝苦(ねぐる)しくなかった
て form	寝苦(ねぐる)しくて	寝苦(ねぐる)しくなくて
Adverbial	寝苦(ねぐる)しく	—
Conditional ば	寝苦(ねぐる)しければ	寝苦(ねぐる)しくなければ
Conditional たら	寝苦(ねぐる)しかったら	寝苦(ねぐる)しくなかったら

1. hard to sleep; unable to sleep comfortably; restless

Describes a state where one cannot sleep well, typically because of heat, humidity, or uncomfortable conditions. Most often associated with hot summer nights.

寝苦(ねぐる)しい夜(よる)が続(つづ)く。

The sleepless nights continue.

暑(あつ)くて寝苦(ねぐる)しいので、エアコンをつけた。

It was so hot I couldn't sleep, so I turned on the air conditioner.

梅雨(つゆ)の時期(じき)は湿度(しつど)が高(たか)くて寝苦(ねぐる)しい日(ひ)が多(おお)い。

During the rainy season, there are many nights where it's too humid to sleep well.

Usage

Almost always about heat or humidity on summer nights. Weather forecasts use it as a set phrase: 今夜(こんや)も寝苦(ねぐる)しい夜(よる)になるでしょう (tonight will be another hard night for sleeping).

Common collocations

寝苦(ねぐる)しい夜(よる): a sticky, sleepless night
暑(あつ)くて寝苦(ねぐる)しい: too hot to sleep

Related words

～苦(ぐる)しい means "hard or unpleasant to ~": 見苦(みぐる)しい (unsightly), 聞(き)き苦(ぐる)しい (unpleasant to hear), 息苦(いきぐる)しい (stifling).

general

Added 2026.3.23 21:11 · Revised 2026.9.30 2:25

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