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tr.v. vi·ti·at·ed, vi·ti·at·ing, vi·ti·ates
1. To reduce the value or quality of; impair or spoil: "His famous compilation of norms was vitiated by a major sampling error" (Frederick Crews).
2. To corrupt morally; debase: "My anxieties ... still are great lest the numerous ... snares of vice should vitiate your early habits of virtue" (Abigail Adams). See Synonyms at corrupt.
3. To make ineffective (a contract or legal stipulation, for example); invalidate.

[Latin vitiāre, vitiāt-, from vitium, fault.]

vi′ti·a·ble (vĭsh′ē-ə-bəl) adj.
vi′ti·a′tion n.
vi′ti·a′tor n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.vitiation - nullification by the destruction of the legal force; rendering null; "the vitiation of the contract"
nullification, override - the act of nullifying; making null and void; counteracting or overriding the effect or force of something
References in classic literature ?
Another observation which pushes me to the same induction--that of the premature vitiation of the American population--is the attitude of the Americans whom I have before me with regard to each other.
But here again enter error of perspective, and vitiation due to the bias of love.
Dubuffet's experiments trace something of their genealogy back to Picasso's vitiation of the 'horrible canvas', and its afterlife in early 20th-century collage and assemblage.
However, for his argument to succeed, more needs to be said on the distinction between vitiation and invasion invoked to explain what counts as a hindrance to freedom and how it bears in each of these cases.
It seems clear that these artists recognize the changing conditions of perception and subjectivity in the world of digital spectacle, and hold out against this regime's vitiation of corporeal experience.
According to Ayurveda, OA is caused by vitiation of Vata (air element) dosha (one of the three body humors).
As have been earlier noted elsewhere, "The vitiation of the flora and fauna of the region, the decimation of the human population, and the frustration of the economic well-being of the people, have been noted by many critics as issues that are inevitable in the exploration of the literature of the region.
I have never asked any player, particularly forward Shakeel Abbasi, to skip fasting and he (Abbasi) has been withdrawn from the training camp owing to code of conduct and in vitiation of discipline," he told media men at a news conference to high light his stance on fasting of players during training camp.
The Administration has begun publicly discussing what the end of the conflict with al-Qaeda would involve, laying the groundwork for the eventual vitiation of the government's authority to detain.
As prospects for the restitution of the political and cultural autonomy and martial prowess upon which the traditional masculine norms had relied became ever more distant, the tradition preserved the masculine ideal through a variety of strategies: lamenting its destruction, displacing it onto long-awaited Jacobite forces, or, later, by displacing responsibility for its betrayal and humiliating vitiation onto women, or onto Ireland in the form of a woman.
However, each minimization of the meaning of these control mechanisms that are available to the opposition is only vitiation of democracy and making the regime stronger, especially if this is carried out by so-called "independent" experts, who are asked for advisability of undertaking such steps against the government.
Measurement and analysis of vitiation of secondary air in air distribution systems (RP-1276).