1 The exchange, imparting, or transmission of ideas, information, opinions, or thoughts, transmitted electronically or by gestures, speech, or writing. 2A message so exchanged, imparted, or transmitted. confidential communication. A communication made during the course of a confidential relationship that is legally protected from involuntary disclosure and may be withheld from evidence. See also privilege. commutative justice privileged communication. A communication made, whether or not duri...