Plunged, past participle of plunge. Synonyms in the same form.
Immerse
immersed, submerged, steeped, engulfed, absorbed, overwhelmed, engrossed, drowned
Dip
dipped, doused, dunked, soused
Dive
dived, plunked
Other
fallen, slumped, launched, dumped, precipitated, decreased, pitched, ducked
All synonyms for plunge →