Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb plump_up

1 sense of plump up

Sense 1
fluff up, plump up, shake up -- (make fuller by shaking; "fluff up the pillows")
       => shake, agitate -- (move or cause to move back and forth; "The chemist shook the flask vigorously"; "My hands were shaking")