countermand

COUNTERMAND, v.t. [L., to command.]

1. To revoke a former command; or to give an order contrary to one before given, which annuls a former command and forbids its execution; as, to countermand orders.

2. To oppose; to contradict the orders of another.

3. To prohibit. [Little used.]

COUNTERMAND, n. A contrary order; revocation of a former order or command.