annul
an·nul
verb
1.
Origin
From Middle English annullen, from Old French anuller, from Latin annullō (“annihilate, annul”), from ad (“to”) + nūllus (“none, not any”).
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Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.