[muh-nahy-uh-kuh l]


of or relating to mania or a maniac.

Origin of maniacal

First recorded in 1670–80; maniac + -al1
Related formsma·ni·a·cal·ly, adverbpost·ma·ni·a·cal, adjectivepre·ma·ni·a·cal, adjectivesub·ma·ni·a·cal, adjectivesub·ma·ni·a·cal·ly, adverbun·ma·ni·a·cal, adjectiveun·ma·ni·a·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for maniacal

delirious, lunatic, mad, raving, demoniac

Examples from the Web for maniacal

Contemporary Examples of maniacal

Historical Examples of maniacal

British Dictionary definitions for maniacal


maniac (ˈmeɪnɪæk)


affected with or characteristic of mania
characteristic of or befitting a maniacmaniacal laughter
Derived Formsmaniacally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for maniacal

1670s, from maniac (adj.) + -al (1). Related: Maniacally.

Online Etymology Dictionary, © 2010 Douglas Harper

maniacal in Medicine




Suggestive of or afflicted with insanity.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.