revocation

Concise Oxford English Dictionary © 2008 Oxford University Press:
revoke/rɪˈvəʊk/

▶verb

• 1 end the validity or operation of (a decree, decision, or promise).

• 2 (in card games) fail to follow suit despite being able to do so.

– derivatives
revocability noun,
revocable adjective,
revocation noun,
revocatory adjective,
revoker noun.

– origin ME: from OFr. revoquer or L. revocare, from re- ‘back’ + vocare ‘to call’.