under the weather

Cultural  

1. Indisposed, unwell: “The day after the big party, Jay had to call in sick, saying he was feeling under the weather.”

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under the weather Idioms  

1. Ailing, ill; also, suffering from a hangover. For example, She said she was under the weather and couldn't make it to the meeting. This expression presumably alludes to the influence of the weather on one's health. [Early 1800s] The same term is sometimes used as a euphemism for being drunk, as in After four drinks, Ellen was a bit under the weather.

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Example Sentences

Written before the full force of the crisis became apparent, Yasheng Huang's Capitalism with Chinese Characteristics: Entrepreneurship and the State presciently anticipates the need for a guide to the least understood weaknesses in China's economy.

From Time Magazine Archive