1. Involving the joint activity of two or more
   "concerted action";
   - conjunct, conjunctive, cooperative, united

1. Contrive (a plan) by mutual agreement
   "The team concerted a strategy to win the championship"
    
2. Settle by agreement
   "concert one's differences"

See also: joint

Type of: determine, settle, square off, square up

Encyclopedia: Concerted