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English definition of “hysterical”

hysterical

adjective
 
 
/hɪˈsterɪkəl/
NO CONTROL If someone is hysterical, they cannot control their feelings or behaviour because they are extremely frightened, angry, excited, etc.: hysterical laughter As soon as Wendy saw the blood, she became hysterical.Becoming too excited and easily upsetMental and psychiatric disorders
FUNNY informal extremely funnyHumour and humorous
hysterically adverb They all thought it was hysterically funny.
(Definition of hysterical from the Cambridge Learners Dictionary © Cambridge University Press)
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