Third-person singular simple present indicative form of plunge

the act of plunging or submerging / a dive, leap, rush, or pitch into (into water) / (dated) A swimming pool

(transitive) To thrust into liquid, or into any penetrable substance; to immerse. / (figuratively, transitive) To cast, stab or throw into some thing, state, condition or action.

(transitive) To remove a blockage by suction.

simple past tense and past participle of plunge

(idiomatic) To start a new endeavor enthusiastically and wholeheartedly, though possibly without experience.

simple past tense and past participle of plunge into

A partial synonym of plunge in.

That descends steeply. / Aimed from higher ground, as fire upon an enemy. / (of the neckline of a dress) Very low-cut.

present participle of plunge