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over·cool | \ ˌō-vər-ˈkül 
\
\overcooled; overcooling
Definition of overcool
: to cool excessively : to lose or to cause (something or someone) to lose too much heat or warmth
… has a dehumidifying cycle that's supposed to dry out a humid room without overcooling it. — Consumer Reports Conventional greenhouse additions overheat, overcool and tend to frost up when it's cold and windy. — The Globe and Mail (Canada)
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Time Traveler for overcool
The first known use of overcool was in 1590
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