1
as in demonic
of, relating to, or worthy of an evil spirit
a fiendish delight in playing cruel tricks
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Antonyms & Near Antonyms
2
as in brutal
having or showing the desire to inflict severe pain and suffering on others
shook with fiendish laughter as he watched his victims writhe in agony
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of fiendish
The soloist in the Sibelius was a mediocre violinist ill-equipped to deal with the concerto’s profound emotions and fiendish technical demands.
—
Luis Palomares,
Miami Herald,
27 Feb. 2026
Jim Carrey plays the eponymous Grinch, a fiendish Whoville outlaw who declares war on the festive season.
—
Danny Horn,
Entertainment Weekly,
29 Nov. 2025
Next up is Pagli, a madwoman with a thin, charred body, fiendish laugh, and ghoulish shrieks.
—
JSTOR Daily,
30 Oct. 2025
Johann Sebastian Bach’s The Art of Fugue is a fiendish work of near-mythical status.
—
Genevieve Marks,
Air Mail,
25 Oct. 2025
See All Example Sentences for fiendish
Luis Palomares,
Miami Herald,
27 Feb. 2026
Jim Carrey plays the eponymous Grinch, a fiendish Whoville outlaw who declares war on the festive season.
—
Danny Horn,
Entertainment Weekly,
29 Nov. 2025
Next up is Pagli, a madwoman with a thin, charred body, fiendish laugh, and ghoulish shrieks.
—
JSTOR Daily,
30 Oct. 2025
Johann Sebastian Bach’s The Art of Fugue is a fiendish work of near-mythical status.
—
Genevieve Marks,
Air Mail,
25 Oct. 2025
See All Example Sentences for fiendish
Recent Examples of Synonyms for fiendish
Adjective
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Carlson has spoken of his own brush with demonic forces, who left him bloodied and scratched in the night, while his wife and their four spaniels slept undisturbed.
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When their biggest demonic enemy (Lee Byung-hun) encourages the formation of an equally popular K-pop boy band aimed at stealing the souls of their fans, the trio has to fight harder than ever to hold the demons at bay while keeping their friendship intact.
Adjective
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His first strikeout was part of a brutal sequence.
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The injury is obviously a brutal blow to Canada's starting 11.
Adjective
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Disclosure Day sees Daniel (O'Connor) and Margaret (Blunt) racing to evade the sinister Wardex corporation with the ultimate goal of disclosure.
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Over the past decade, Pride Nights have morphed into something much larger, radical and sinister, in my opinion.
Adjective
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Passing a child who is unprepared may be the cruelest act of all.
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This is your news to share or not share; posting about this on Facebook strikes me as cruel.
Adjective
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From perhaps the most diabolical spot on the entire course.
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The diabolical reality of growth.
Adjective
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The story follows vicious ex-con, Max Cady (Bardem) and his revenge plot against married couple Tom (Patrick Wilson) and Anna Bowden (Adams).
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Mahmic’s vicious goal in traffic salvaged some good feeling before a decisive showdown with Qatar next week.
Adjective
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Tech companies are developing tools and collaborating, yet voluntary efforts struggle against sophisticated malicious actors.
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For cybersecurity companies, identifying a digital agent crawling a website used to be enough evidence of malicious activity.
Adjective
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For my microgeneration, the disillusionment crept in with the savage failure of the Iraq War.
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Set in the fictional lands of Westeros, House of the Dragon depicts a savage succession struggle within House Targaryen and a resulting civil war, known as the Dance of the Dragons.
Cite this Entry
“Fiendish.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fiendish. Accessed 26 Jun. 2026.
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