Meaning of “be on the same wavelength” in the English Dictionary

british dictionary

"be on the same wavelength" in British English

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be on the same wavelength

C2 (of two or more people) to think in a similar way and to understand each other well:

What makes the problem worse is that Howard and Tina are not on the same wavelength about how to deal with it.

(Definition of “be on the same wavelength” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)