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Synonyms

cooler

American  
[koo-ler] / ˈku lər /

noun

  1. a container or apparatus, as an insulated chest, in which something may be cooled or kept cool.

  2. anything that cools or makes cool; refrigerant.

  3. an air conditioner.

  4. a tall drink, consisting of liquor, soda, and a fruit garnish.

  5. water cooler.

  6. Slang. the cooler, jail.

    He was in the cooler for three months for petty theft.

  7. Ice Hockey Slang. penalty box.


cooler British  
/ ˈkuːlə /

noun

  1. a container, vessel, or apparatus for cooling, such as a heat exchanger

  2. a slang word for prison

  3. a drink consisting of wine, fruit juice, and carbonated water

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of cooler

First recorded in 1565–75; cool + -er 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It was another smoggy day for Trump in the Chinese capital, although cooler than Thursday, when Xi greeted Trump at the footsteps of Tiananmen Square with a lavish state welcome.

From Los Angeles Times • May 15, 2026

A cooler increase in gasoline prices moderated overall sales growth for retailers in April.

From The Wall Street Journal • May 14, 2026

Warsh has said he prefers alternative inflation measures like trimmed mean and median PCE, which strip out outliers and tend to run cooler than the headline figures.

From Barron's • May 14, 2026

Although increased CO2 helps the stratosphere radiate heat more effectively, the resulting cooler temperatures mean the Earth system ultimately releases less infrared energy into space overall.

From Science Daily • May 14, 2026

Then he grabs a can of Diet Coke from the cooler behind his desk and cracks it open.

From "Popcorn" by Rob Harrell

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