• To grow plump; to swell out.
  • To make plump; to fill (out) or support; often with up.
  • To cast or let drop all at once, suddenly and heavily.
  • To give a plumper (kind of vote).
  • To give (a vote), as a plumper.
  • To favor or decide in favor of something.
  • To drop or fall suddenly or heavily, all at once.



  • From Middle English plump, plompe, a borrowing from Middle Dutch plomp or Middle Low German plump.
  • From Middle English plumpen, akin to Middle Dutch plompen, Middle Low German plumpen, German plumpfen.
  • From Middle English plump.

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