1
venting one's pent-up anger;venting one's frustration;letting off steam
たまには酒にでも酔ってはじけて日頃の鬱憤晴らしたほうがいいんじゃないか。
Isn't it better to get drunk and cut loose once in a while and blow off the tension of daily frustration?
Other forms
うっぷん晴らし 【うっぷんばらし】