Fiendish
Fiendish adjective - Of, relating to, or worthy of an evil spirit.
Obsessed and fiendish are semantically related In some cases you can use "Obsessed" instead an adjective "Fiendish".
Nearby Words: fiend, fiendishly
Mutual synonyms
Cite this Source
Obsessed and Fiendish. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/fiendish/obsessed
Fiendish & Obsessed. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/fiendish/obsessed>.
Obsessed or Fiendish. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/fiendish/obsessed.
Google Ngram Viewer shows how "fiendish" and "obsessed" have occurred on timeline