Ferocious
Ferocious adjective - Violently unfriendly or aggressive in disposition.
Usage example: Captain Bligh and his castaways bypassed numerous Pacific islands, so afraid were they of the ferocious tribesmen
Grim is a synonym for ferocious in violent topic. In some cases you can use "Grim" instead an adjective "Ferocious", when it comes to topics like ruthless.
Mutual synonyms
Cite this Source
Grim and Ferocious. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/ferocious/grim
Ferocious & Grim. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/ferocious/grim>.
Grim or Ferocious. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/ferocious/grim.
Google Ngram Viewer shows how "ferocious" and "grim" have occurred on timeline