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English definition of “crack up”

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crack up

informal
verb uk phrasal verb with crack   /kræk/ us  
C2 to become mentally ill: I think she's cracking up.
Translations of “crack up”
in Chinese (Traditional) (精神)崩潰,垮掉…
in Russian дойти до нервного срыва…
in Turkish sinir krizi/buhran geçirmek…
in Chinese (Simplified) (精神)崩溃,垮掉…
in Polish załamać się (nerwowo)…
(Definition of crack up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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