crack up
[noun]
Synonyms: nervous breakdown, breakdown, collapse, nervous prostration, crash, pileup, prang, smash, smashup, stramash, wreck, debacle

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Related Words: decline, deterioration

[TahlilGaran] English Synonym Dictionary ▲

crack up phrasal verb informal (see also crack)

1. crack (somebody) up to laugh a lot at something, or to make someone laugh a lot:
Everyone in the class just cracked up.
She’s so funny. She cracks me up.

2. to become unable to think or behave sensibly because you have too many problems or too much work:
I was beginning to think I was cracking up!

[TahlilGaran] Dictionary of Contemporary English ▲

ˈcrack-up noun [countable]

1. a nervous breakdown

2. American English an accident involving one or more vehicles
⇒ crack up at crack¹

[TahlilGaran] Dictionary of Contemporary English ▲

crack up
1.
to laugh.
She was very funny and we cracked up every time she said anything.

2.
to become mentally ill.
I lost my appetite, became unable to sleep, and worried that I was cracking up.

[TahlilGaran] English Idioms Dictionary ▲

crack up
to burst into laughter
I cracked up when the man started talking about the incident with the taxi driver.

[TahlilGaran] English Idioms Dictionary ▲

crack up
v.
1. To wreck or be wrecked; smash up.
The airplane cracked up in landing.
He cracked up his car.
2. informal To become mentally ill under physical or mental overwork or worry.
He had kept too busy for years, and when failures came, he cracked up.
It seemed to be family problems that made him crack up.
3. Burst into laughter or cause to burst into laughter.
That comedian cracks me up.

[TahlilGaran] English Idioms Dictionary ▲