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Definitions

crack up

VERB
break down mentally
Synonyms
STRONGEST
freak out go crazy
WEAK
become demented become psychotic blow a fuse collapse come apart at seams decline derange deteriorate fail flip out go bonkers go nuts go off deep end go off rocker go out of mind go to pieces have breakdown sicken
Antonyms
WEAK
be calm
VERB
crash or wreck a car, plane, etc.
Synonyms
STRONGEST
crash wreck
WEAK
impact
VERB
laugh or to cause to laugh unrestrainedly
Synonyms
STRONGEST
laugh make laugh
STRONG
amuse cackle chortle chuckle entertain giggle guffaw roll in the aisles snicker snigger split one's sides titter
WEAK
wow
Antonyms
STRONG
cry

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

We cracked up at that and recorded the moment.

From Los Angeles Times

“Gross!” the boy cried, and they cracked up.

From Literature

Owen narrowed his eyes, and George cracked up.

From Literature

Maybe investing like the “smart money” isn’t all it’s cracked up to be.

From The Wall Street Journal

My Magic 8 Ball sees little to look forward to except a lot of laughs — because we’ll need to crack up at the cruelty to keep from crying, you know?

From Los Angeles Times

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.