plunge
noun.
a brief swim in water
Synonym: dip
noun.
a steep and rapid fall
verb.
thrust or throw into
Immerse yourself in hot water
Synonym: immerse
verb.
drop steeply
the stock market plunged
Synonym: dive, plunk
verb.
dash violently or with great speed or impetuosity
She plunged at it eagerly
verb.
begin with vigor
He launched into a long diatribe|She plunged into a dangerous adventure
Synonym: launch
verb.
cause to be immersed
The professor plunged his students into the study of the Italian text
Synonym: immerse
verb.
fall abruptly
It plunged to the bottom of the well
Synonym: dump
verb.
immerse briefly into a liquid so as to wet, coat, or saturate
dip the garment into the cleaning solution|dip the brush into the paint
Synonym: dip, douse, dunk, souse
verb.
devote (oneself) fully to
He immersed himself into his studies