Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

310. Plunge — N. plunge, dip, dive, header; ducking &c v.; diver.

V. plunge, dip, souse, duck; dive, plump; take a plunge, take a header; make a plunge; bathe &c (water) 337. submerge, submerse; immerse; douse, sink, engulf, send to the bottom. get out of one's depth; go to the bottom, go down like a stone, drop like a lead balloon; founder, welter, wallow.