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Definition of Hysterical
1. Adjective. Characterized by or arising from psychoneurotic hysteria. "Hysterical amnesia"
2. Adjective. Marked by excessive or uncontrollable emotion. "A mob of hysterical vigilantes"
Definition of Hysterical
1. [adj]
Medical Definition of Hysterical
1. Relating to or characterised by hysteria. (05 Mar 2000)