stamp duty stamp down • stamp hammer · · · Info · Definitions · Synonyms · Characters · · stamp duty · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) a tax collected by requiring a stamp to be purchased and attached (usually on documents or publications). Synonyms: stamp tax, stamp duty. · · Noun Definition 1 Synonyms · · · stamp tax · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 m latin small letter m U+006D p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079