# cool

> English word · Adjective · IPA /kuːl/ · frequency rank #731

## Definitions
1. Of a mildly low temperature.
2. Allowing or suggesting heat relief.
3. Of a color, in the range of violet to green.
4. Not showing emotion; calm and in control of oneself.
5. Unenthusiastic; lukewarm; skeptical.
6. Calmly audacious.
7. Applied facetiously to a sum of money, commonly as if to give emphasis to the largeness of the amount.
8. Knowing what to do and how to behave; behaving with effortless and enviable style and panache; considered popular by others.
9. Fashionable; trendy; hip.
10. All right; acceptable; good.
11. Very interesting or exciting.
12. Followed by with: able to tolerate.
13. Of a pair of people, Having good relations.

## Etymology
From Middle English cool, from Old English cōl (“cool, cold, tranquil, calm”), from Proto-West Germanic *kōl(ī), from Proto-Germanic *kōlaz, *kōluz (“cool”), from *kalaną (“to be cold, to freeze”), Proto-Indo-European *gel- (“to be cold, to freeze”).
Cognates
Cognate with North Frisian kuul, kölj (“cold”), Saterland Frisian köil (“cool”), West Frisian koel (“cool”), Cimbrian khuul (“chilly, cool”), Dutch koel (“cool”), German kühl (“cool”), Low German köhl (“cool”), Luxembourgish kill (“cool”), Vilamovian kił (“cool”); also Latin gelū, gelum, gelus (“frost; chill, cold”), Belarusian хо́лад (xólad, “cold”), Bulgarian хлад (hlad, “chill, coolness”), Czech chlad (“cold”), Macedonian лад (lad, “shade; coolness”), Polish chłód (“cold”), Russian and Ukrainian хо́лод (xólod, “cold”), Serbo-Croatian хла̑д, hlȃd (“shade”), Sanskrit जड (jaḍa, “cold; stiff”), जल (jala, “water”). Related to cold.

## Easily confused with
- **cop** (https://plainspell.com/en/vs/cool-vs-cop)
- **cow** (https://plainspell.com/en/vs/cool-vs-cow)
- **cos** (https://plainspell.com/en/vs/cool-vs-cos)
- **cox** (https://plainspell.com/en/vs/cool-vs-cox)
- **cor** (https://plainspell.com/en/vs/cool-vs-cor)
- **cot** (https://plainspell.com/en/vs/cool-vs-cot)
- **coz** (https://plainspell.com/en/vs/cool-vs-coz)
- **coy** (https://plainspell.com/en/vs/cool-vs-coy)
- **cpl** (https://plainspell.com/en/vs/cool-vs-cpl)
- **CRO** (https://plainspell.com/en/vs/cool-vs-cro)
- **CTO** (https://plainspell.com/en/vs/cool-vs-cto)
- **Cov** (https://plainspell.com/en/vs/cool-vs-cov)
- **CSL** (https://plainspell.com/en/vs/cool-vs-csl)
- **cost** (https://plainspell.com/en/vs/cool-vs-cost)
- **copy** (https://plainspell.com/en/vs/cool-vs-copy)
- **core** (https://plainspell.com/en/vs/cool-vs-core)
- **cops** (https://plainspell.com/en/vs/cool-vs-cops)
- **corn** (https://plainspell.com/en/vs/cool-vs-corn)
- **crop** (https://plainspell.com/en/vs/cool-vs-crop)
- **cope** (https://plainspell.com/en/vs/cool-vs-cope)

## Common misspellings (3)
`ccool`, `cooll`, `ocol`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/cool