adj. & v.
—adj. (esp. of a person or animal or part of the body) having a full rounded shape; fleshy; filled out.
—v.tr. & intr. (often foll. by up, out) make or become plump; fatten.
Derivatives:
plumpish adj. plumply adv. plumpness n. plumpy adj.
Etymology: ME plompe f. MDu. plomp blunt, MLG plump, plomp shapeless etc.
2.
v., n., adv., & adj.
—v.
1 intr. & tr. (often foll. by down) drop or fall abruptly (plumped down on the chair; plumped it on the floor).
2 intr. (foll. by for) decide definitely in favour of (one of two or more possibilities).
3 tr. (often foll. by out) utter abruptly; blurt out.
—n. an abrupt plunge; a heavy fall.
—adv. colloq.
1 with a sudden or heavy fall.
2 directly, bluntly (I told him plump).
—adj. colloq. direct, unqualified (answered with a plump 'no').
Etymology: ME f. MLG plumpen, MDu. plompen: orig. imit.
Useful english dictionary. 2012.