disbelieve
Definitions
To be unable or unwilling to believe that something is true or real.
To reject the truth or validity of a statement or claim.
Examples
It is difficult to disbelieve the eyewitness account given the overwhelming evidence.
She found it hard to disbelieve his sincere apology after all that had happened.
Many people continue to disbelieve the scientific consensus despite the clear data.
Synonyms
distrust doubt question reject skeptical of lack faith in discredit