cosign coshery • co-sign · · · Info · Definitions · Synonyms · Characters · · cosign · · Text Latin · · Script 6 · · Length 2 · · Syllables Definitions · · · (verb) sign jointly. Synonyms: co-sign. Example: "Husband and wife co-signed the lease." · · Verb Definition 1 (verb) sign and endorse (another person's signature), as for a loan. Synonyms: co-sign. · · Verb Definition 2 Synonyms · · · co-sign · · Synonym 1 Characters · · c latin small letter c U+0063 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073