Suggestive of or afflicted with insanity: a maniacal frenzy. (adjective)
Characterized by excessive enthusiasm or excitement: a maniacal interest in gambling. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "maniacal" in a sentence
"Allred, who served 16 years in the House and four years in the Senate, said he was disturbed by the lawmakers self imposed cross over deadline and what he called a maniacal way to pass legislation."
"This hostel in Eixample has also got immaculately clean dorms, comfortable beds with decent mattresses and reading lights, and what the owners term "maniacal attention to the soundtrack" witness the LP covers adorning the walls."
"I used to frequent a certain maniacal toy site and noticed that several people there would go see whatever movie debuted that week EVERY WEEKEND."