disbelieve Meaning, Definition & Usage

  1. verb reject as false; refuse to accept
    discredit.

WordNet

Dis`be*lieve" transitive verb
Wordforms
imperfect & past participle Disbelieved ; present participle & verbal noun Disbelieving
Definitions
  1. Not to believe; to refuse belief or credence to; to hold not to be true or actual.
    Assertions for which there is abundant positive evidence are often disbelieved, on account of what is called their improbability or impossibility. J. S. Mill.

Webster 1913