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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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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The devil invades a Georgetown home, and holy men have quite the job to do on a demonic little girl.
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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.
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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The heat has become so unbearable in Japan that weather officials in April announced a new term for days when maximum temperatures exceed 104 degrees — kokushobi, meaning harsh or cruel heat, according to the Japan Times.
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For thousands of Venezuelans, however, the lack of definitive answers has become one of the tragedy’s cruelest consequences.
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 6 Jul. 2026.
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