As a Noun: 1. An uncanny, almost unnatural or magical, ability to communicate with another person and understand them well, even without the help of words or signs. 2. Direct communication between people's minds. English = telepathy, extrasensory perception (ESP). As a Verb or Adjective: 1. To share the same interests and attitudes as someone else and to understand each other very well. Idiomatic English = (be) on the same wavelength. 2. To have an uncanny, almost unnatural or magical, ability to communicate with another person and understand them well. 3. To communicate directly between people's minds; to communicate telepathically.