/ nɪˈgeɪʃn; NAmE / noun ( formal )
1.
[ C , usually sing. , U ] the exact opposite of sth; the act of causing sth not to exist or to become its opposite :
This political system was the negation of democracy.
2.
[ U ] disagreement or refusal :
She shook her head in negation.
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WORD ORIGIN
late Middle English : from Latin negatio(n-) , from the verb negare deny.