In unison Meaning, Definition & Usage

  1. adverb speaking or singing at the same time; simultaneously
    in chorus.
    • they shouted `Yes!' in unison
    • they responded in chorus to the teacher's questions
  2. adverb at the same pitch
    • they sang in unison

WordNet


Definitions
  1. in agreement; agreeing in tone; in concord.

Webster 1913