To move or thrust at, under, or into the midst of with sudden force
To cause to penetrate with force
To come to the ground suddenly and involuntarily
To move or advance against strong resistance
To undergo a sharp, rapid descent in value or price
The act of plunging suddenly downward into or as if into water
A sudden involuntary drop to the ground
A usually swift downward trend, as in prices
The act of swimming
Let's not just plunge into this.
Unwilling to go on, she stopped and hugged herself, watching Keaton plunge into the water.
He did not plunge headlong into the wars of Louis XI.
He actually made the plunge into that bottomless black pool sound almost enticing.