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 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, "Disneyland’s Haunted Mansion updates reveal that a purr-fect idea never dies," 12 Apr. 2021 Pajamas were modern, freeing women from corsets and other fiendish constraints. Washington Post, "This is our pajama moment," 7 Dec. 2020 In Below Deck’s fiendish version of reality, the guests are less characters than caricatures of ludicrous wealth. Darren Franich,, "The politics of Below Deck," 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, "Review: 'The Killings at Kingfisher Hill,' by Sophie Hannah," 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,, "John Lithgow reveals the roles that fans most recognize him for," 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, "Revisiting Mengele’s Malignant “Race Science”," 15 June 2020 Revisiting these novels in audio format is a way to acquaint myself anew with the fiendish plots, terrific prose and indelible characters, and to experience a different version of the initial infatuation. Sarah Weinman, New York Times, "‘Killing People in Fiction Was Fun’: Mysteries That Have Stood the Test of Time," 15 May 2020 Is your company’s dress code just a secret test of high-level reasoning skills designed by fiendish bosses? Amanda Mull, The Atlantic, "The Office Dress Code Should Never Come Back," 13 Apr. 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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Statistics for fiendish

Last Updated

4 May 2021

Cite this Entry

“Fiendish.” Dictionary, Merriam-Webster, Accessed 17 May. 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

Thesaurus: All synonyms and antonyms for fiendish

Nglish: Translation of fiendish for Spanish Speakers

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