a temporary fashion, notion, manner of conduct, etc., especially one followed enthusiastically by a group.

Origin of fad

1825–35; noun use of dial. fad to look after things, busy oneself with trifles, back formation from obsolete faddle to play with, fondle. See fiddle
Related formsfad·like, adjective

Synonyms for fad

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for fad

Contemporary Examples of fad

Historical Examples of fad

  • I see some man in the East has a fad for breaking the ice in the river and going swimming.

    The Spenders

    Harry Leon Wilson

  • For at bottom, atheism is either a fad or a trade or a fatuity.

    The Book of Khalid

    Ameen Rihani

  • I laughed at this fad, and, not thinking him incorrigible I took him into my service.

    The Memoires of Casanova, Complete

    Jacques Casanova de Seingalt

  • Every private inclination is a fad, and even fads have their fixed forms.

    The New Society

    Walther Rathenau

  • It was a fad of the Doctor's to pass an afternoon on the farm, gathering stones.

British Dictionary definitions for fad


noun informal

an intense but short-lived fashion; craze
a personal idiosyncrasy or whim
Derived Formsfaddish, adjectivefaddishness, nounfaddism, nounfaddist, noun

Word Origin for fad

C19: of uncertain origin



biochem flavin adenine dinucleotide: an ester of riboflavin with ADP that acts as the prosthetic group for many flavoproteinsSee also FMN
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 fad

1834, "hobby, pet project;" 1881 as "fashion, craze," perhaps shortened from fiddle-faddle. Or perhaps from French fadaise "trifle, nonsense," ultimately from Latin fatuus "stupid."

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for fad



flavin adenine dinucleotide
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.