Meaning of “step/tread on sb's toes” in the English Dictionary

british dictionary

"step/tread on sb's toes" in British English

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step/tread on sb's toes

If you step/tread on someone's toes, you say or do something that upsets or annoys that person, especially by involving yourself in matters that are not your responsibility.

(Definition of “step/tread on sb's toes” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)