lash out

to suddenly try to hit sb/sth （突然）狠打，痛打
She suddenly lashed out at the boy.
她突然狠狠地打那个男孩。
to criticize sb in an angry way 怒斥；严厉斥责
In a bitter article he lashed out at his critics.
他写了一篇尖刻的文章，猛烈驳斥批评他的人。