crack up
phrasal verbcrack up (informal)
- to become ill, either physically or mentally, because of pressure
- You'll crack up if you carry on working like this.
- He thought he'd never get through the ordeal without cracking up.
Want to learn more?
Find out which words work together and produce more natural sounding English with the Oxford Collocations Dictionary app.
- to start laughing a lot
- He walked in and everyone just cracked up.
crack somebody up
- (informal) to make somebody laugh a lot
- Gill's so funny —she just cracks me up.