Drop heavily.

synonyms: plank down, plonk down.

Roget 306: descend; go down, drop down, come down; fall, gravitate, drop, slip, slide, rappel, settle; plunge, plummet, crash; decline, set, sink, droop, come down a peg; slump.    dismount, alight, light, get down; swoop; stoop etc. 308; fall prostrate, precipitate oneself; let fall etc. 308.    tumble, trip, stumble, titubate^†, lurch, pitch, swag, topple, topple over, tumble over, topple down, tumble down; tilt, sprawl, plump down, come down a cropper.    ... show more

Set (something or oneself) down with or as if with a noise.

synonyms: flump, plank, plonk, plop, plump, plunk, plunk down.

Dutch: neerploffen, neervallen, neerzakken, neerzinken