rebut
verb [ T ]
uk/rɪˈbʌt/ us-tt-to say firmly and directly, or prove, that something is not true:
A lawyer for the bank's CEO said he had been given too little time to rebut the report's conclusions ahead of a board vote later this week.
A leading UK supermarket has strenuously rebutted allegations that it exerts a monopoly over the UK's £124bn grocery market.
Economists at the World Bank are rebutting claims that globalization hurts the poor.
The Government is attempting to rebut continuing criticism about the weight of red tape.