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
Plotting kind of my most fiendish, happy, mad scientist state.
—
Literary Hub,
4 May 2026
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
Miller works with him to refine the routes, placing checkpoints that are both fair and fiendish.
—
New Atlas,
1 Nov. 2025
See All Example Sentences for fiendish
Literary Hub,
4 May 2026
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
Miller works with him to refine the routes, placing checkpoints that are both fair and fiendish.
—
New Atlas,
1 Nov. 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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And Addy, perhaps the most brutal American Girl story, is enslaved.
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In January, the government suppressed huge nationwide protests in a brutal crackdown that left thousands dead.
Adjective
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Because everyone will have access to the same information, AI will accentuate the value of personal connections, again promoting lineages and networks that at their most extreme may appear to be sinister establishment conspiracies.
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Soon, Pinocchio – under the influence of a sinister Cricket (Robert Englund) — goes on a killing rampage to free James from everyone evil around him, and becoming a real boy in the process — one piece at a time.
Adjective
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Swift moved on from one Brit to the next, quietly dating actor Joe Alwyn from 2017 to 2023, while the world spent back-to-back cruel summers without Taymerica.
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This is particularly gratifying given the absurd and cruel trolling the young actress received from the toxic corners of internet fandom leading up to the film’s release.
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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This vicious machine chewed him up and spit him out in predictable fashion.
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The mood changed a bit when Tab Ramos took a vicious elbow to the side of his head and fractured his skull.
Adjective
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According to the Macomb County Prosecutor's Office, 37-year-old Adam Mazur-Baker was arraigned Tuesday on one count of using a computer to commit a crime and one count of malicious use of telecommunications services.
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This command executes malicious code inside the AppleScript directly.
Adjective
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The Yellow Death has disfigured the population, and soldiers in white-and-red tunics serve the savage Duke of Tviot.
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Josefowicz, in her decathlon of a performance, brought Ligeti’s savage discontinuities to the surface.
Cite this Entry
“Fiendish.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fiendish. Accessed 5 Jul. 2026.
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