Concur
Concur verb - To have or come to the same opinion or point of view.
Opt in
Mutual synonyms
Cite this Source
Opt in and Concur. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/concur/opt_in
Concur & Opt in. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/concur/opt_in>.
Opt in or Concur. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/concur/opt_in.
Google Ngram Viewer shows how "concur" and "opt in" have occurred on timeline