Headstrong and Implacable

Headstrong

Headstrong adjective - Sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.
Usage example: the tenants of the building remain headstrong in their determination not to be evicted by the developer

Implacable and headstrong are semantically related. In some cases you can use "Implacable" instead an adjective "Headstrong".

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

Headstrong and implacable are semantically related. Sometimes you can use "Headstrong" instead an adjective "Implacable".

Nearby Words: implacability, implacably
Cite this Source
Implacable and Headstrong. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/headstrong/implacable
Headstrong & Implacable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/headstrong/implacable>.
Implacable or Headstrong. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/headstrong/implacable.
Google Ngram Viewer shows how "headstrong" and "implacable" have occurred on timeline