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Verb: plump down  plúmp dawn
  1. Drop heavily
    - plonk down, plank down
  2. Set (something or oneself) down with or as if with a noise
    "He plumped down the money on the table";
    - plank [informal], flump [informal], plonk [informal], plop, plunk, plunk down, plump, slap

Derived forms: plumps down

Type of: drop, place down, put down, set down