revoker


re·voke

R0209600 (rĭ-vōk′)v. re·voked, re·vok·ing, re·vokes v.tr. To invalidate or cause to no longer be in effect, as by voiding or canceling: Her license was revoked.v.intr. Games To fail to follow suit in cards when required and able to do so.n. Games Failure to follow suit in a card game when required and able to do so.
[Middle English revoken, from Old French revoquer, from Latin revocāre : re-, re- + vocāre, to call; see wekw- in Indo-European roots.]
re·vok′er n.