plunge

[1]	descend , drop , plummet , dive , pitch , nosedive , fall (headlong)
[2]	submerge , sink , immerse , engulf , overwhelm
[3]	immerse
[4]	dive , plunk
[5]	launch
[6]	immerse
[7]	dump
[8]	dunk , dip , souse , douse
[9]	steep , immerse , engulf , engross , absorb , soak up

[1]	dip
[2]	dive , nosedive , fall , pitch , plummet , drop , descent , submersion , immersion
[3]	gamble , wager , bet , risk