vitiation

English Thesaurus

1. nullification by the destruction of the legal force; rendering null (noun.act)

hypernym	:	nullification, override,
definition	:	the act of nullifying; making null and void; counteracting or overriding the effect or force of something (noun.act)

derivation	:	invalidate, vitiate, void,
definition	:	take away the legal force of or render ineffective (verb.change)

derivation	:	invalidate, vitiate, void,
definition	:	take away the legal force of or render ineffective (verb.change)