Word:
negate (verb) – to deny, to make negative or ineffective
Context:
His last statement negates the ones made by the first witness.
Auditory Context:
YouTube channel GeoBeats News
english.in.america
Word:
negate (verb) – to deny, to make negative or ineffective
Context:
His last statement negates the ones made by the first witness.
Auditory Context:
YouTube channel GeoBeats News
english.in.america 
I sent this to my Fb page.