concertmentn.

1795 J. Sinclair Gen. View Agric. Northern Counties Scotl. 73 Let these [sc. plans] be submitted for general adoption, and let an unanimous concertment and co-operation go to give them their full force and effect.

a1827 R. Pollok Persecuted Family (1829) v. 97 A band, which..had taken arms without any previous concertment.

1899 Amer. Lawyer Apr. 134/1 Inspired with a vitality and strength due to concertment of action manifested through the channels of a trade association.

1932 Financial Times 17 June 8/6 It would be particularly difficult in that situation to sustain a conviction of concertment against the secretary.

2011 L. Dittmer in S. Ganguly & W. R. Thompson Asian Rivalries vi. 144 Though Moscow has been inclined to brandish the threat of a triangular veto of U.S. unilateralism, there have been few issue areas in which such concertment has succeeded.