Impliable
Stiff and impliable are semantically related in steadfast topic. In some cases you can use "Stiff" instead an adjective "Impliable", when it comes to topics like inflexible.
Mutual synonyms
Cite this Source
Stiff and Impliable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/impliable/stiff
Impliable & Stiff. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/impliable/stiff>.
Stiff or Impliable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/impliable/stiff.
Google Ngram Viewer shows how "impliable" and "stiff" have occurred on timeline