Under the weather
/ΛΚndΙ Γ°Ι ΛweΓ°Ι/informal, politeUK Β· US
What does βUnder the weatherβ mean?
Under the weather means slightly ill or not feeling well.
"Under the weather" is deliberately vague. It signals a cold, a headache or general tiredness rather than serious illness.
It is polite and widely used at work, which is part of its appeal: it excuses you without oversharing.
When do people say it?
A gentle way of saying you are unwell without giving details.
βI'm a bit under the weather, so I'll join the meeting by phone.β
Is it formal or informal?
Register: informal, polite. It is most at home in everyday conversation rather than formal writing. Most common in UK and US.
Where does it come from?
Nautical in flavour and nineteenth century in date; the exact source is unsettled.
Origin confidence: Disputed; treat with caution
How do you say βUnder the weatherβ in other languages?
Related idioms
- Call it a day, To stop for the day, or stop altogether.
Last reviewed 2026-09-11