Crack up
verb
To burst into laughter.
He cracked up at the joke.
Often appears as...
- crack up laughing
- crack me up
verb
To have a mental breakdown.
He cracked up under the pressure of his job.
Often appears as...
- crack up under pressure
- crack up from stress
Usage tips
Disapproving
verb
To damage or cause an accident, especially in reference to vehicles.
He cracked up the car in a terrible accident.
Often appears as...
- crack up the car
- crack up the vehicle
Usage tips
Disapproving
verb
To burst into laughter.
He cracked up at the joke.
Often appears as...
- crack up laughing
- crack me up
verb
To have a mental breakdown.
He cracked up under the pressure of his job.
Often appears as...
- crack up under pressure
- crack up from stress
Usage tips
Disapproving
verb
To damage or cause an accident, especially in reference to vehicles.
He cracked up the car in a terrible accident.
Often appears as...
- crack up the car
- crack up the vehicle
Usage tips
Disapproving
Definition 1 of 3
Pro Tip 1/3Laughter Context
Used after something is funny. It suggests uncontrollable laughter.
The comedian’s pun was so good, the audience cracked up.
Pro Tip 2/3Figurative Sense
Doesn't always mean literal laughter—it can describe something very funny.
That meme you sent me really cracked me up!
Pro Tip 3/3Informal Setting
Best used in casual conversations, not formal situations.
After the funny story, even my boss cracked up.
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