supercool

Syllables: su·per·coolUK/ˈsuː.pəˌkuːl//ˈsu.pəɹˌkul/

supercool verb: to cool a material below its transition temperature without that transition occurring.

Verb

supercool (third-person singular simple present supercools, present participle supercooling, simple past and past participle supercooled)

To cool a material below its transition temperature without that transition occurring.

Synonyms:

undercool

supercool (comparative more supercool, superlative most supercool)

(informal) Very cool; thoroughly excellent, relaxed, or fashionable.
- On to how to access your Home folder from a remote Mac — a supercool feature that's only bound to get more popular as the Internet continues to mature.2009, Bob LeVitus, Mac OS X Snow Leopard For Dummies, page 323
Synonym of supercooled

Synonyms:

supercooled

Verb
third-person singular present	supercools
present participle	supercooling
past participle	supercooled
past	supercooled
Adjective
comparative	more supercool
superlative	most supercool

From super- + cool.

What does supercool mean?: Supercool means to cool a material below its transition temperature without that transition occurring.
What part of speech is supercool?: Supercool can be a verb or an adjective.
How do you pronounce supercool?: Supercool is pronounced /ˈsuː.pəˌkuːl/ (UK).
What is the past tense of supercool?: The past tense of supercool is supercooled.

Adapted from Wiktionary: supercool (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-supercool.wav.

Cite this entry: “supercool.” Word.ws, https://word.ws/supercool. Based on Wiktionary, CC BY-SA 4.0.