Imperturbable
Imperturbable adjective - Not easily panicked or upset.
Serious and imperturbable are semantically related. In some cases you can use "Serious" instead an adjective "Imperturbable".
Nearby Word: imperturbability
Serious
Serious adjective - Not joking or playful in mood or manner.
Imperturbable and serious are semantically related. Sometimes you can use "Imperturbable" instead an adjective "Serious".
Nearby Words: seriously, seriousness
Cite this Source
Serious and Imperturbable. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/imperturbable/serious
Imperturbable & Serious. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/imperturbable/serious>.
Serious or Imperturbable. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/imperturbable/serious.
Google Ngram Viewer shows how "imperturbable" and "serious" have occurred on timeline