con·cert·ed \kənˈ ̷ ̷ ̷ ̷ also (ˈ)kän|-\adjective 1. a.: mutually contrived or planned : agreed on < carefully concerted signals > b.: performed in unison : done together < a concerted sigh that should have been heard in Australia — Bill Alcine > 2.: arranged in parts for several voices, musical instruments, or dancers (as a trio, string ensemble, or ballet)