fren·zy 
(fr
ĕn
z
ē)
n. pl. fren·zies 1. A state of violent mental agitation or wild excitement.
2. Temporary madness or delirium.
3. A mania; a craze.
tr.v. fren·zied,
fren·zy·ing,
fren·zies To drive into a frenzy.
[Middle English frenesie, from Old French, from Medieval Latin phrenēsia, from Latin phrenēsis, back-formation from phrenēticus, delirious; see FRENETIC.]