否定; 反; 負; 非
1. The act of denying; assertion of the nonreality or untruthfulness of anything; declaration that something is not, or has not been, or will not be; denial; -- the opposite of affirmation.
Our assertions and negations should be yea and nay. --Rogers.
2. Logic Description or definition by denial, exclusion, or exception; statement of what a thing is not, or has not, from which may be inferred what it is or has.
n 1: a negative statement; a statement that is a refusal or
denial of some other statement
2: the speech act of negating
3: (logic) a proposition that is true if and only if another
proposition is false