# crack up

> English word · Verb · IPA /ˈkɹæk ˈʌp/

## Definitions
1. To laugh.
2. To laugh.
3. To laugh.
4. To break.
5. To break.
6. To break.
7. To break.
8. To break.
9. To break.
10. To affect the image of something.
11. To affect the image of something.
12. To affect the image of something.
13. To smoke crack cocaine.

## Etymology
Compare Japanese 笑う (warau, “laugh, smile”), suffixed from Japanese 割る (waru, “crack”).

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