Certify
Thumbs up
Mutual synonyms
Related pairs
Cite this Source
Thumbs up and Certify. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/certify/thumbs_up
Certify & Thumbs up. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/certify/thumbs_up>.
Thumbs up or Certify. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/certify/thumbs_up.
Google Ngram Viewer shows how "certify" and "thumbs up" have occurred on timeline