The action or process of disaffirming or the state of being disaffirmed.
From disaffirm + -ation (suffix creating nouns from verbs). This form emphasizes the action itself rather than the legal consequence, emerging in legal English during the 19th century.
While disaffirmance is the legal result, disaffirmation is the action itself—it's like the difference between 'the court's reversal' versus 'the court reversing the decision,' and this distinction matters in legal documents.
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