Crack up
/krak ʌp/B2
UpperIntermediate
1. Start laughing suddenly or be made to laugh.
- The comedian's jokes were so funny that I cracked up in the middle of the show.
- Whenever he tells that story, everyone cracks up, no matter how many times they've heard it.
2. Experience a mental or emotional breakdown.
- She worked so hard without any breaks that she eventually cracked up under the pressure.
- After the stressful events, he felt like he was going to crack up.
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