Definition of “round on sb/sth” - English Dictionary

british dictionary

“round on sb/sth” in British English

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round on sb/sth

phrasal verb with round uk /raʊnd/ us /raʊnd/ verb [ T ]

to suddenly turn and attack someone or something:

to criticize someone who has criticized you:

The mayor rounded on his critics with a very forceful speech.

(Definition of “round on sb/sth” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)