# coolest

/ˈkuɫəst/ (US) · /kˈuːləst/ (UK) · CEFR A2 · Adjective

Source: https://englishreference.com/word/coolest
Updated: 2026-05-03

## Definition

the most impressive, fashionable, or popular thing in a group. It can also describe the lowest temperature compared to others.

For teachers: the superlative form of 'cool', indicating the highest degree of being fashionable, impressive, or low in temperature.

## Examples

- He has the coolest car in the whole school.
- The tech company just released their coolest gadget yet, featuring a screen that can fold in half.
- While the morning was chilly, the shaded valley remained the coolest part of the trail throughout the entire afternoon hike.

## Pitfalls

- Not "the most coolest" but "the coolest" — 'Cool' is a one-syllable adjective, so it uses the '-est' suffix rather than 'most' to form the superlative.

## Usage notes

- Superlative form; always preceded by the definite article 'the' when used as a modifier.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.