Definify.com
Webster 1913 Edition
Incredulous
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.
Webster 1828 Edition
Incredulous
INCRED'ULOUS
,Adj.