The Collaborative International Dictionary of English v.0.48:

Frenzy \Fren"zy\ (fr[e^]n"z[y^]), n.; pl. Frenzies
   (fr[e^]n"z[i^]z). [OE. frenesie, fransey, F. fr['e]n['e]sie,
   L. phrenesis, fr. Gr. fre`nhsis for freni^tis disease of the
   mind, phrenitis, fr. frhn mind. Cf. Frantic, Phrenitis.]
   Any violent agitation of the mind approaching to distraction;
   violent and temporary derangement of the mental faculties;
   madness; rage.
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         All else is towering frenzy and distraction. --Addison.
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         The poet's eye in a fine frenzy rolling. --Shak.

   Syn: Insanity; lunacy; madness; derangement; alienation;
        aberration; delirium. See Insanity.
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