Under the weather Definition & Meaning - Merriam-Webster
https://www.merriam-webster.com/dictionary/under%20the%20weather
WEB1. : the state of the atmosphere with respect to heat or cold, wetness or dryness, calm or storm, clearness or cloudiness. 2. : state or vicissitude of life or fortune. 3. : disagreeable atmospheric conditions: such as. a. : rain, storm. b. : cold air with dampness. 4. : weathering. weather. 2 of 3. verb. weathered; weathering. ˈwet͟h-riŋ,
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