plump up plum pudding • plum purple · · · Info · Definitions · Synonyms · Characters · · plump up · · Text Common · · Latin · · Scripts 8 · · Length 2 · · Syllables Definitions · · · (verb) make fuller by shaking. Synonyms: fluff up, plump up, shake up. Example: "Fluff up the pillows." · · Verb Definition 1 Synonyms · · · fluff up · · Synonym 1 shake up · · Synonym 2 Characters · · space U+0020 l latin small letter l U+006C m latin small letter m U+006D p latin small letter p U+0070 u latin small letter u U+0075