re- ‘back’ + vocare ‘to call’

source: the simpsons GIF - Find & Share on GIPHY

1. with object put an end to the validity or operation of (a decree, decision, or promise):

｟かたく｠ 〈当局などが〉〈免許･法律など〉を無効にする, 廃止する

e.g. the men appealed and the sentence was revoked.

2. no object (in bridge, whist, and other card games) fail to follow suit despite being able to do so.

〘トランプ〙 (台札と同種の札を持ちながら)わざと別種の札を出す〘反則行為〙

revocatory | ˈrevəkəˌtôrē, rəˈvōkəˌtôrē, rēˈvōkəˌtôrē | adjective

revoker noun

late Middle English: from Old French revoquer or Latin revocare, from re- ‘back’ + vocare ‘to call’.