dump on

verb

(slang, transitive) To finish a romantic relationship with (someone).

I can't believe you would dump on your best friend like that.

意味（1）

(slang, transitive) To finish a romantic relationship with (someone).

意味（2）

(slang, transitive) To complain to (someone) extensively; to (figuratively) transfer one's problems to (someone) by complaining to them.

I came home and dumped on him about everything that was going on at work.