{ } a. [ L. phreneticus, Gr. frenhtiko`s, frenitiko`s: cf. F. phrénétique. See Frantic, and cf. Frenetic. ] Relating to phrenitis; suffering from frenzy; delirious; mad; frantic; frenetic. -- Phre*net"ic*al*ly, adv. [1913 Webster]