Con·cert v. t. [imp. & p. p. Concerted; p. pr. & vb. n. Concerting.]
1. To plan together; to settle or adjust by conference, agreement, or consultation.
It was concerted to begin the siege in March. --Bp. Burnet.
2. To plan; to devise; to arrange.
A commander had more trouble to concert his defense before the people than to plan . . . the campaign. --Burke.