Pronunciation change

Noun change

Singular
cooler

Plural
coolers

  1. (countable) A cooler is a box that is used with ice to help keep things cold.
    Pack all of the soda into the cooler; we wouldn't want it to get flat.
  2. (slang) A cooler is a prison.
  3. (countable & uncountable) A cooler is a kind of mixed drink.
    They served wine coolers at the party.

Adjective change

Positive
cool

Comparative
cooler

Superlative
coolest

  1. The comparative form of cool; more cool.