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[fuh-nat-i-kuh l] /fəˈnæt ɪ kəl/
motivated or characterized by an extreme, uncritical enthusiasm or zeal, as in religion or politics.
Also, fanatic.
Origin of fanatical
First recorded in 1540-50; fanatic + -al1
Related forms
fanatically, adverb
fanaticalness, noun
nonfanatical, adjective
nonfanatically, adverb
unfanatical, adjective
unfanatically, adverb
enthusiastic, zealous, frenzied, rabid.
Synonym Study Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for fanatically
Contemporary Examples
Historical Examples
  • I am not speaking of that; Miss Amy Trefusis might be said to be fanatically conceited.

    Jeremy Hugh Walpole
  • The Bhutanese are badly armed; but they are fanatically brave.

    The Elephant God Gordon Casserly
  • The peasantry are, everywhere, fanatically hostile to foreigners.

  • He belonged to a class of holy men, fanatically pious, rigidly observant of the law, and miserably and abjectly poor.

    The Apostles Ernest Renan
  • Said a country vicar to a fanatically scrupulous devotee: "God is not so silly as that."

    Philosophic Nights In Paris Remy De Gourmont
  • In the past Terra had been racked by wars of religion, one fanatically held opinion opposed to another.

    The Defiant Agents Andre Alice Norton
  • The boy's wild, vicious character was fanatically rebellious against all discipline.

    Their Son; The Necklace

    Eduardo Zamacois
  • Her conscience, fanatically unbalanced, distorted it with cruellest self-injustice.

    The Dull Miss Archinard Anne Douglas Sedgwick
British Dictionary definitions for fanatically


surpassing what is normal or accepted in enthusiasm for or belief in something; excessively or unusually dedicated or devoted
Derived Forms
fanatically, 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
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Word Origin and History for fanatically



1540s, from fanatic + -al (1). Related: Fanatically.

Online Etymology Dictionary, © 2010 Douglas Harper
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