Complain
Complain verb - To express dissatisfaction, pain, or resentment usually tiresomely.
Usage example: the time-honored tradition of new recruits complaining about the food in the mess hall
Fret and complain are semantically related in grumble about topic. In some cases you can use "Fret" instead a verb "Complain".
Cite this Source
Fret and Complain. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/complain/fret
Complain & Fret. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/complain/fret>.
Fret or Complain. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/complain/fret.
Google Ngram Viewer shows how "complain" and "fret" have occurred on timeline