Firm
Unsmiling
Unsmiling adjective - Not joking or playful in mood or manner.
Firm and unsmiling are semantically related in uncompromising topic. Sometimes you can use "Firm" instead an adjective "Unsmiling".
Mutual synonyms
Cite this Source
Unsmiling and Firm. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/firm/unsmiling
Firm & Unsmiling. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/firm/unsmiling>.
Unsmiling or Firm. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/firm/unsmiling.
Google Ngram Viewer shows how "firm" and "unsmiling" have occurred on timeline