低 気 圧(ていきあつ)

ていきあつ

noun

low pressure; low-pressure system; depression

1. low atmospheric pressure; low-pressure system; cyclone

A meteorological system where atmospheric pressure is lower than the surrounding area, typically bringing clouds, rain, and unstable weather.

低気圧(ていきあつ)が近(ちか)づいている。

A low-pressure system is approaching.

The weather will likely deteriorate due to the low-pressure system.

A developed low-pressure system passed over the Sea of Japan side, bringing strong winds and heavy rain to various regions.

2. bad mood; feeling down

A colloquial metaphor describing someone who is in a gloomy or irritable mood, as if affected by low atmospheric pressure.

今日(きょう)は低気圧(ていきあつ)だね。

You seem to be in a bad mood today.

I always feel down on Monday mornings.

If you talk to her when she's in a bad mood, she'll get angry, so it's better to leave her alone.

A weather term that also has a popular colloquial figurative use. Combines 低(てい) (low) + 気圧(きあつ) (atmospheric pressure).

Sense 1 is the meteorological meaning, very common in weather forecasts
Sense 2 is a colloquial metaphor meaning someone is in a bad mood or feeling gloomy, as if affected by low pressure — widely used in everyday speech
Many Japanese people believe that low atmospheric pressure causes headaches or fatigue, which reinforces the metaphor

高気圧(こうきあつ): high pressure — the opposite; also used figuratively for being in a good mood
台風(たいふう): typhoon — a specific type of intense low-pressure system
気圧(きあつ): atmospheric pressure — the base term

Related Words

general

Added 2026.4.3 7:11 · Revised 2026.9.2 13:02

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