Fiendish
Fiendish adjective - Of, relating to, or worthy of an evil spirit.
Undead and fiendish are semantically related. In some cases you can replace term "Undead" with "Fiendish", this adjectives are similar.
Nearby Words: fiend, fiendishly
Undead
Mutual synonyms
Cite this Source
Undead and Fiendish. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/fiendish/undead
Fiendish & Undead. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/fiendish/undead>.
Undead or Fiendish. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/fiendish/undead.
Google Ngram Viewer shows how "fiendish" and "undead" have occurred on timeline