Definition of “lash out” - English Dictionary

british dictionary

“lash out” in British English

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lash out

phrasal verb with lash uk /læʃ/ us /læʃ/ verb

to suddenly attack someone or something physically or criticize him, her, or it in an angry way:

I was only teasing him and suddenly he lashed out (at me) and hit me in the face.
Why's Tina in such a bad mood? She really lashed out at me when I was late for work.

(Definition of “lash out” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)