pile-on

[ pahyl-on, ‐awn ]
/ ˈpaɪlˌɒn, ‐ˌɔn /

noun

the action of followers who join a hostile group in harshly criticizing or judging a less dominant group or individual, sometimes gloating over that group’s or person's defeat or diminished standing (often used attributively): Long after the merciless baiting ceased to be funny, her critics continued to join the pile-on.Social media encourages a kind of pile-on mentality that is very unforgiving of mistakes and flaws.

Origin of pile-on

Noun use of verb phrase pile on
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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