fiend·​ish | \ ˈfēn-dish How to pronounce fiendish (audio) \

Definition of fiendish

1 : perversely diabolical took a fiendish pleasure in hurting people
2 : extremely cruel or wicked
3 : excessively bad, unpleasant, or difficult fiendish weather

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Other Words from fiendish

fiendishly adverb
fiendishness noun

Synonyms & Antonyms for fiendish



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Examples of fiendish in a Sentence

He takes a fiendish delight in hurting people. a fiendish delight in playing cruel tricks
Recent Examples on the Web Ransomware is being continually mentioned in the daily news and appears to be a seemingly unstoppable fiendish craze. Lance Eliot, Forbes, 14 June 2021 Selling out a controlling interest, however, means M.O.D.O.K. must give up control of his fiendish enterprises, forcing the title villain to fight a pair of battles -- one at work, and another in trying to keep his family together. Brian Lowry, CNN, 20 May 2021 This fiendish feline would have followed guests throughout the ride, a creature said to despise living humans and with predatory, possessive instincts. Todd Martens Game Critic, Los Angeles Times, 12 Apr. 2021 Pajamas were modern, freeing women from corsets and other fiendish constraints. Washington Post, 7 Dec. 2020 In Below Deck’s fiendish version of reality, the guests are less characters than caricatures of ludicrous wealth. Darren Franich,, 12 Oct. 2020 That head housed a singular brain, which again and again allowed Poirot to outperform the police, outfox criminals and solve the most complex and fiendish murders. Sophie Hannah, Star Tribune, 11 Sep. 2020 As a fiendish terrorist-thief hunting down an illicit $100 million payday in the high-altitude, high-octane thriller, Lithgow matched both wits and blows with Sylvester Stallone. Dan Snierson,, 28 June 2020 The aim was not one of fiendish engineering, to change eye color, which would have been merely cosmetic. Adam Gopnik, The New Yorker, 15 June 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fiendish.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of fiendish

1529, in the meaning defined at sense 1

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Time Traveler for fiendish

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The first known use of fiendish was in 1529

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Dictionary Entries Near fiendish


field yam-root






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Last Updated

21 Jun 2021

Cite this Entry

“Fiendish.” Dictionary, Merriam-Webster, Accessed 25 Jun. 2021.

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English Language Learners Definition of fiendish

: very evil or cruel
: extremely bad, unpleasant, or difficult

More from Merriam-Webster on fiendish

Nglish: Translation of fiendish for Spanish Speakers


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