Circadian
Circadian adjective - Of or relating to biological processes occurring at 24-hour intervals.
Regular and circadian are semantically related. in during the day topic. In some cases you can use "Regular" instead an adjective "Circadian".
Cite this Source
Regular and Circadian. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/circadian/regular
Circadian & Regular. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/circadian/regular>.
Regular or Circadian. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/circadian/regular.
Google Ngram Viewer shows how "circadian" and "regular" have occurred on timeline