incredulous
unwilling or unable to believe
Roots
- -ous / -ious: full of or marked by a quality
- cred: believe or trust
- im- / in- (not): not or without
Other words with the cred root
In- blocks cred. Incredulous is the face belief makes when it refuses to enter.
He gave an incredulous laugh when the ad promised a perfect score in one weekend.
Incredulous sits across from credulous. The credulous person believes too fast; the incredulous person cannot believe, even for a moment.