Definition of "disbelief" in English

noun

1. An unpreparedness, unwillingness, or an inability to believe that something is the case.

   • She cried out in disbelief on hearing that terrorists had crashed an airplane into the World Trade Center in New York City.

2. Astonishment.

   • I stared in disbelief at the Grand Canyon.

3. The loss or abandonment of a belief; the cessation of belief.