# coolly vs costly

> English confusable word pair

## The two words

### coolly
*adverb · IPA /ˈkuːl.li/ · frequency rank #43,577*
At a moderately low temperature.

### costly
*adjective · IPA /ˈkɒst.li/ · frequency rank #7,899*
Of high cost; expensive.

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