#1
negate v. [
contradict, belie] be in contradiction with
. wn #2
negate v. [
contradict, contravene] deny the truth of
. wn #3
negate v. [
contradict] prove negative; show to be false
. wn #4
negate v. [
neutralize, neutralise, nullify] make ineffective by counterbalancing the effect of; "Her optimism neutralizes his gloom"; "This action will negate the effect of my efforts"
. wn