[plural] [noun]If someone has hysterics or is in hysterics, they become uncontrollably angry, frightened or excited.Convinced the plane was about to crash, many people were sobbing and in hysterics.(informal) He's a brilliant comedian and has audiences everywhere in hysterics (= laughing uncontrollably).
HYSTERICS
Meaning of HYSTERICS in English
Cambridge English vocab. Кембриджский английский словарь. 2012