Definition of plump forinformal
- The President plumped for the incumbent candidate in the election.
- I finally plumped for the blue dress.
: to drop, sink, or come in contact suddenly or heavily
: to favor or decide in favor of someone or something strongly or emphatically
: to drop, cast, or place suddenly or heavily
: a sudden plunge, fall, or blow
: with a sudden or heavy drop
: straight down
: straight ahead
: group, flock
: to make plump
: to become plump
: having a full rounded usually pleasing form
: ample, abundant
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