1. fierce or destructive attacks
2. overwhelming amounts or quantities of something
Usage: figurative

Examples

• The castle withstood multiple onslaughts from enemy forces.
• The team faced relentless onslaughts from their opponents.
• She survived the onslaughts of criticism from the media.
• The city endured onslaughts of heavy rain and flooding.
• His speech triggered onslaughts of angry responses online.
• The company weathered onslaughts of competition from rivals.
• The garden suffered onslaughts from hungry deer and rabbits.