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Feeling unwell or slightly ill, but not seriously sick
I can't go to work today—I'm feeling under the weather.
She stayed home because she was under the weather.
This idiom is commonly used to describe mild illness or fatigue without specifying the exact condition.
Use 'under the weather' when describing mild illness or fatigue in casual conversation. Avoid using it in formal or medical settings.
The exact origin is unclear, but it likely comes from the idea that weather affects how people feel, especially in the 19th century when weather was thought to influence health.
This phrase is informal and commonly used in everyday conversation. It is not typically used in formal or medical contexts.