{ } a. [ L. hystericus, Gr. &unr_;, fr. "yste`ra the womb; perh. akin to &unr_; latter, later, and E. utter, out.] 1. Of or pertaining to hysteria. [1913 Webster] With no hysteric weakness or feverish excitement, they preserved their peace and patience. Bancroft. [1913 Webster] 2. In a state of hysteria; affected, or troubled, with hysterics; uncontrollably emotional; convulsive, fitful. [1913 Webster] 3. In a state of panic or behaving in a wild irrational manner, due to fear or emotional trauma. [PJC] 4. Resembling hysteria; as, hysterical laughter. [PJC] Variants: Hysteric | 