Incredulous
Pronunciation : In*cred"u*lous
Part of Speech : a.
Etymology : [L. incredulus. See In- not, and Credulous.]
Definition : 1. Not credulous; indisposed to admit or accept that which is related as true, skeptical; unbelieving. Bacon. A fantastical incredulous fool. Bp. Wilkins.
2. Indicating, or caused by, disbelief or incredulity. "An incredulous smile." Longfellow.
3. Incredible; not easy to be believed. [R.] Shak.
Source : Webster's Unabridged Dictionary, 1913