1plump 
/ˈplʌmp/ verb
plumps; plumped; plump·ing /ˈplʌmp/ verb : to sit, fall, or lie down in a sudden, awkward, or relaxed way : plop [no obj] ▪ He came home and plumped [=flopped] down on the couch. [+ obj] ▪ She plumped her bags onto the bench.
plump for [phrasal verb]
plump for (someone or something) informal 1 US : to express support for (someone or something)
▪ The President plumped for the incumbent candidate in the election. 2 Brit : to choose (someone or something) after thinking carefully
▪ I finally plumped for the blue dress.
▪ The President plumped for the incumbent candidate in the election.
▪ I finally plumped for the blue dress.
— compare 2plump
