1.  negate(v = verb.stative) belie, contradict - be in contradiction with;
is one way to depart, deviate, diverge, vary
Derived form noun negation₃
Sample sentences: Something ----s something

2.  negate(v = verb.communication) contradict, contravene - deny the truth of;
is one way to differ, disagree, dissent, take issue
Derived forms noun negation₂, noun negation₁, adjective negative₂
Sample sentences: Somebody ----s something

3.  negate(v = verb.cognition) contradict - prove negative; show to be false;
is one way to demonstrate, establish, prove, shew, show
Antonym: affirm
Derived form adjective negative₂
Sample sentences: Somebody ----s something; Something ----s something; Somebody ----s that CLAUSE

4.  negate(v = verb.change) neutralise, neutralize, nullify - make ineffective by counterbalancing the effect of; "Her optimism neutralizes his gloom"; "This action will negate the effect of my efforts"
is one way to weaken
Sample sentences: Somebody ----s something; Something ----s something

negate, v.tr.
1 nullify; invalidate.
2 imply, involve, or assert the non-existence of.
3 be the negation of.

Derivative:
negator n.

Etymology:
L negare negat- deny