coauthor coaugment • coauthority · · · Info · Definitions · Synonyms · Characters · · coauthor · · Text Latin · · Script 8 · · Length 3 · · Syllables Definitions · · · (noun) a writer who collaborates with others in writing something. Synonyms: joint author. · · Noun Definition 1 Synonyms · · · joint author · · Synonym 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 h latin small letter h U+0068 o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075