Incredulous /(?; 135)/

In·cred·u·lous

Incredulous

a.
  1. Not credulous; indisposed to admit or accept that which is related as true, skeptical; unbelieving.
    A fantastical incredulous fool.
    — Bp. Wilkins.
  2. Indicating, or caused by, disbelief or incredulity.
  3. Incredible; not easy to be believed. [R.]