onslaught

noun

1. A fierce attack.

2. A large number of people or things resembling an attack.

   “They opened the doors and prepared for the onslaught of holiday shoppers.”

3. A sudden and severe onset of trouble

4. (military) an offensive against an enemy (using weapons)

   “the attack began at dawn”

   Similar: attack, onset, onrush

5. The rapid and continuous delivery of linguistic communication (spoken or written)

   “a barrage of questions”

   “a bombardment of mail complaining about his mistake”

   Similar: barrage, bombardment, outpouring