Co-sign
Co-sign verb - Sign jointly.
Certify and co-sign are semantically related. in pledge topic. In some cases you can use "Certify" instead a verb phrase "Co-sign", when it comes to topics like give assurance.
Mutual synonyms
Cite this Source
Certify and Co-sign. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/co-sign/certify
Co-sign & Certify. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/co-sign/certify>.
Certify or Co-sign. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/co-sign/certify.