disbelieve

verb3

1. •
   To not believe; to exercise disbelief.

   • If you disbelieve such people, then keep disbelieving them for as long as you live or want.
2. •
   To actively deny (a statement, opinion or perception).

   • He chose to disbelieve the bad news as inconceivable.
3. •
   To cease to believe.

   • And so far as this opinion prevails, we have reason to fear that the important doctrine, of the real Divinity and even of the humanity of Christ, will be gradually disbelieved. — 1802