After weeks of stress, he finally vented his pent-up rage during the meeting.

vented 是动词 vent 的过去式,vent 本意是"通风口、排气孔",引申为"发泄、宣泄"情绪,特指通过语言或行为来表达愤怒、沮丧等强烈的负面情感。