The onrush of something is its sudden development, which happens so quickly and forcefully that you are unable to control it. The onrush of tears took me by ...
Verb edit · To rush or flow forward forcefully. quotations ▽. 2021 May 29, David Hytner, “Chelsea win Champions League after Kai Havertz stuns Manchester City” ...
an attack by a defending force against an attacking enemy force in order to regain lost ground or cut off enemy advance units etc. bombardment, bombing.