adj. 25B6; adjective
Janet became hysterical : OVERWROUGHT, overemotional, out of control, frenzied, frantic, wild, feverish; beside oneself, driven to distraction, agitated, berserk, manic, delirious, unhinged, deranged, out of one's mind, raving; informal in a state.
(informal) her attempts to dance were hysterical : HILARIOUS, uproarious, very funny, very amusing, comical, farcical; informal hysterically funny, side-splitting, rib-tickling, a scream, a hoot, a barrel of laughs; dated killing.