ultracool

adjective
ul·​tra·​cool | \ ˌəl-trə-ˈkül How to pronounce ultracool (audio) \

Definition of ultracool

: extremely or extraordinarily cool ultracool temperatures At times, Miguel seemed calm, ultracool, and controlled …— Kelly Fitzpatrick especially, informal : very good or fashionable bought an ultracool car

First Known Use of ultracool

1868, in the meaning defined above

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The first known use of ultracool was in 1868

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Cite this Entry

“Ultracool.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultracool. Accessed 9 Mar. 2021.

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