Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun onrush
2 senses of onrush
Sense 1
attack, onslaught, onset, onrush -- ((military) an offensive against an enemy (using weapons); "the attack began at dawn")
=> operation, military operation -- (activity by a military or naval force (as a maneuver or campaign); "it was a joint operation of the navy and air force")
Sense 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 onrush of her thoughts")
=> rush, spate, surge, upsurge -- (a sudden forceful flow)