Dark
Fiendish
Fiendish adjective - Of, relating to, or worthy of an evil spirit.
Dark and fiendish are semantically related. Sometimes you can use "Dark" instead an adjective "Fiendish".
Nearby Words: fiend, fiendishly
Both words in one sentence
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Dark Reprise: The background music for "Muncher Marathon" is a fiendish remix of the forest's normal music.
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She's got dark-green skin, fiendish red eyes, and a shrill voice to go with the whole Obviously Evil look... yet still has an attractive-enough feminine figure.
- Synopsis: As Sherlock Holmes investigates an enigmatic doctor who makes extraordinary claims, he uncovers a fiendish web of dark crime.
Source: Fanfic Recs / Sherlock Holmes
Cite this Source
Fiendish and Dark. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/dark/fiendish
Dark & Fiendish. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/dark/fiendish>.
Fiendish or Dark. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/dark/fiendish.
Google Ngram Viewer shows how "dark" and "fiendish" have occurred on timeline