grey market greyly • grey matter · · · Info · Definitions · Synonyms · Characters · · grey market · · Text Common · · Latin · · Scripts 11 · · Length 4 · · Syllables Definitions · · · (noun) an unofficial market in which goods are bought and sold at prices lower than the official price set by a regulatory agency. Synonyms: grey market, gray market. · · Noun Definition 1 Synonyms · · · gray market · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 k latin small letter k U+006B m latin small letter m U+006D r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079