Synonyms for Plunge:
n.dwindle, shrink, decrease, crater, diminish. back up, culvert, cesspit, airlock, clog, conduit, cutoff, wade in, downspout, blockage, enter, lunge. belly flop, move, the butterfly, decompression, backstroke, forge, breaststroke, crawl, bathing, cannonball. lose your balance/footing. come under, be in dire/desperate straits, suffer, undergo, incur, not know where/which way to turn, go through, be in the grip of something, endure. cast off, hydroplane, heave to, ground, capsize, heel, dock, go about, come about, founder. stumble, landing, trip, pratfall. •act (noun)
descent, comedown, grade, slope.
douse, dip, engulf, engross, dive, soak up, plunk, launch, souse, swoop, pitch, steep, immerse, absorb, dunk.
•swan dive (noun)
descend, drop, come down, topple, lower, fall down, fall, settle, decline, slide, slip, tumble, plummet, slump.
•dive or fall fast (verb)
descend, pitch, dip, tear, topple, go down, rush, submerge, plummet, dash, tumble, plunk, drop, immerse, lunge, drive, thrust, sink, charge.
dip, flood, drown, bathe, dunk, engulf, immerse, wallow, submerge, douse, inundate, sink.
shorten, deepen, depress.
swoop, dive, pitch, fall, plummet, drop.
dash, rush, canter, lope, scoot, scurry, race, dart, hurry, gallop, bound, sprint, run, jog, tear, trot, scramble, scamper.
hasten, cutback, reduction, shrinkage. stumble, pratfall, lunge, collapse, nose dive. ram, decrease, skid, spill. thrust. landing. stab, dig, drive. trip. go down. cut. •cascade