Implacable
Implacable adjective - Sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.
Rugged and implacable are semantically related. In some cases you can use "Rugged" instead an adjective "Implacable".
Nearby Words: implacability, implacably
Rugged
Rugged adjective - Harsh and threatening in manner or appearance.
Usage example: the warrior's rugged features frightened the child
Implacable and rugged are semantically related. Sometimes you can use "Implacable" instead an adjective "Rugged".
Mutual synonyms
Cite this Source
Rugged and Implacable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/implacable/rugged
Implacable & Rugged. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/implacable/rugged>.
Rugged or Implacable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/implacable/rugged.
Google Ngram Viewer shows how "implacable" and "rugged" have occurred on timeline