COUNTERMAND, verb transitive [Latin , 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, noun A contrary order; revocation of a former order or command.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI