Onrush

n.

1.

A rushing onward.

Noun	1.	onrush - (military) an offensive against an enemy (using weapons); "the attack began at dawn" Synonyms: attack, onset, onslaught
	2.	onrush - a forceful forward rush or flow; "from the bow she stared at the mesmerising onrush of the sea where it split and foamed"; "the explosion interrupted the wild onsrush of her thoughts"

Brownian movement, advance, affluence, afflux, affluxion, angular motion, ascending, ascent, axial motion, backflowing, backing, backward motion, career, climbing, concourse, confluence, conflux, course, crosscurrent, current, defluxion, descending, descent, downflow, downpour, downward motion, drift, driftage, ebbing, flight, flow, flowing, fluency, flux, forward motion, gush, inflow, mill run, millrace, mounting, oblique motion, ongoing, onward course, outflow, passage, plunging, progress, race, radial motion, random motion, reflowing, refluence, reflux, regression, retrogression, rising, run, rush, set, sideward motion, sinking, soaring, spate, sternway, stream, subsiding, surge, tide, traject, trajet, trend, undercurrent, undertow, upward motion, water flow