Plunge

immersió

(The act of thrusting into or submerging; a dive, leap, rush, or pitch into, or as into, water; as, to take the water with a plunge)

capbussar-se

((figuratively, intransitive) to fall or rush headlong into some thing, action, state or condition)

precipitar

((figuratively, transitive) to cast or throw into some thing, state, condition or action)

submergir

(to thrust into water, or into any substance that is penetrable; to immerse)

submergir-se

((intransitive) to dive, leap or rush (into water or some liquid); to submerge oneself)