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vent (one's) spleen
To voice one's anger. Mom's been venting her spleen to me for an hour already. Apparently, Aunt Marie has wronged her yet again.
vent one's spleen
Fig. to get rid of one's feelings of anger caused by someone or something by attacking someone or something else. Jack vented his spleen at his wife whenever things went badly at work. Peter vented his spleen on his car by kicking it when it broke down.
vent one's spleen
Express one's anger, as in Some people see town council meetings as a place where they can vent their spleen. This expression uses vent in the sense of "air," and spleen in the sense of "anger," alluding to the fact that this organ was once thought to be the seat of ill humor and melancholy. [First half of 1600s]
vent your spleen
If you vent your spleen, you express your anger about something. He took up the attack, venting his spleen against the government for a full hour.
vent your spleengive free expression to your anger or displeasure.
2003 Guardian Woodgate 's clumsy challenge on the striker was not contested, though the visitors wasted little time in venting spleen at both the culpable Danish midfielder and, erroneously, the young pretender.
vent your ˈspleen(literary) express your anger in speech or writing: He vented his spleen on the assembled crowd.In the past, people believed that the spleen (= a small organ near the stomach that controls the quality of the blood cells) was responsible for making someone feel sad or bad-tempered. From this, it came to mean a person’s anger.
vent one’s spleen
tv. to release one’s anger. I just feel like I have to vent my spleen at somebody.