Apathetic
Apathetic adjective - Having or showing a lack of interest or concern.
Unserious and apathetic are semantically related. In some cases you can use "Unserious" instead an adjective "Apathetic".
Nearby Words: apathy, apathetically
Unserious
Mutual synonyms
Cite this Source
Unserious and Apathetic. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/apathetic/unserious
Apathetic & Unserious. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/apathetic/unserious>.
Unserious or Apathetic. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/apathetic/unserious.
Google Ngram Viewer shows how "apathetic" and "unserious" have occurred on timeline