Adamantine and Implacable

Adamantine

Adamantine adjective - Sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.
Usage example: the adamantine opposition of his parents to his marriage to a girl from a poor family

Implacable and adamantine are semantically related in stubborn topic. In some cases you can use "Implacable" instead an adjective "Adamantine", when it comes to topics like resist.

Nearby Word: adamant

Implacable

Implacable adjective - Sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.
Usage example: an implacable judge who knew in his bones that the cover-up extended to the highest levels of government

Adamantine and implacable are semantically related in resist topic. You can use "Adamantine" instead an adjective "Implacable".

Nearby Words: implacability, implacably
Cite this Source
Implacable and Adamantine. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/adamantine/implacable
Adamantine & Implacable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/adamantine/implacable>.
Implacable or Adamantine. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/adamantine/implacable.
Google Ngram Viewer shows how "adamantine" and "implacable" have occurred on timeline