con·cert·ed /kən-'sər-təd/ adj1: mutually contrived or agreed uponthe concerted pursuit of lawful...ends — L. H. Tribe2: acting together toward a common endconcerted wrongdoers
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.
abetting, accordant, agreed, agreeing, aiding and abetting, aligned, amalgamated, assenting, blended, bonded, coacting, coactive, coadjutant, coadjuvant, coalescent, coeval, coexistent, coexisting, cohesive, coincident, coinciding, collaborating, colluding, combined, combining, commixed, composite, concordant, concurrent, concurring, conformable, conforming, congruent, congruous, conjoined, conjoint, conjunct, connective, conniving, consensual, consentaneous, consentient, consenting, consistent with, consolidated, consonant, contributing, converging, cooperating, cooperative, corresponding, coworking, fused, harmonious, harmonized, in accord, in accordance with, in agreement, in alliance, in unison, interactive, joined, joint, merging, mutually agreed, parallel, simultaneous, sympathetic, synergic, united, uniting
associated, coadunate, collective, concurrent (at the same time), concurrent (united), conjoint, consonant, joint
Burton's Legal Thesaurus. William C. Burton. 2006