incredulity

Incredulity, n.

Etymology: [L. incredu: cf. F. incrédulité.]

The state or quality of being i Of every species of incredulity, religious unbelief is the most irrational. Buckminster.

Shades of meaning

Fernald has no entry of its own for incredulity; he lists it under doubt.

Where he writes about it:

Any improbable statement awakens incredulity. — from doubt