Fiendish
Fiendish adjective - Of, relating to, or worthy of an evil spirit.
Impious and fiendish are semantically related in diabolical topic. In some cases you can use "Impious" instead an adjective "Fiendish".
Nearby Words: fiend, fiendishly
Impious
Impious adjective - Not showing proper reverence for the holy or sacred.
Fiendish and impious are semantically related in devilish topic. Sometimes you can use "Fiendish" instead an adjective "Impious", if it concerns topics such as diabolical.
Mutual synonyms
Cite this Source
Impious and Fiendish. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/fiendish/impious
Fiendish & Impious. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/fiendish/impious>.
Impious or Fiendish. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/fiendish/impious.
Google Ngram Viewer shows how "fiendish" and "impious" have occurred on timeline