名词

1. 反面;对立面;否定
The negation of something is its complete opposite or something which destroys it or makes it lose its effect.

2. 否定;否认;拒绝
Negation is disagreement, refusal, or denial.

1. (logic) a proposition that is true if and only if another proposition is false

2. the speech act of negating

3. a negative statement
a statement that is a refusal or denial of some other statement