Adamant
Adamant adjective - Sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.
Stiff is a synonym for adamant in determined topic. In some cases you can use "Stiff" instead the word "Adamant" as an adjective or a noun, when it comes to topics like unyielding, unrelenting.
Stiff
Stiff adjective - Incapable of or highly resistant to bending.
Adamant is a synonym for stiff in unrelenting topic. Sometimes you can use "Adamant" instead the word "Stiff" as an adjective or a noun.
Mutual synonyms
Cite this Source
Stiff and Adamant. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/adamant/stiff
Adamant & Stiff. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/adamant/stiff>.
Stiff or Adamant. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/adamant/stiff.
Google Ngram Viewer shows how "adamant" and "stiff" have occurred on timeline