Dictionary
ma•ni•ac
Pronunciation: (mā'nē-ak"), [key]—
n.
1. a raving or violently insane person; lunatic.
2. any intemperate or overly zealous or enthusiastic person:
a maniac when it comes to details.
—
adj.
maniacal.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.