Rein
Rein noun - The act or practice of keeping something (as an activity) within certain boundaries.
Reins
Mutual synonyms
Cite this Source
Reins and Rein. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/rein/reins
Rein & Reins. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/rein/reins>.
Reins or Rein. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/rein/reins.
Google Ngram Viewer shows how "rein" and "reins" have occurred on timeline