A four-character idiom referring to all sorts of abusive language, curses, and malicious gossip — heaping verbal abuse.
デマに乗って悪口雑言が広がった。
False rumors spread and were accompanied by heaps of abusive remarks.
彼は悪口雑言に耐えられず、会社を辞めた。
He couldn't bear the verbal abuse and quit the company.