Fierce
Fierce adjective - Violently unfriendly or aggressive in disposition.
Usage example: the Vikings had a well-earned reputation for being fierce warriors
Implacable and fierce are semantically related. In some cases you can use "Implacable" instead an adjective "Fierce".
Nearby Words: fiercely, fierceness
Implacable
Implacable adjective - Sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.
Fierce and implacable are semantically related. Sometimes you can use "Fierce" instead an adjective "Implacable".
Nearby Words: implacability, implacably
Mutual synonyms
Related pairs
Cite this Source
Implacable and Fierce. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/fierce/implacable
Fierce & Implacable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/fierce/implacable>.
Implacable or Fierce. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/fierce/implacable.
Google Ngram Viewer shows how "fierce" and "implacable" have occurred on timeline