Unpreparedness, unwillingness, or inability to believe that something is the case.
Astonishment.
The loss or abandonment of a belief; cessation of belief.
Lack of trust or confidence; distrust, untrust.
To be suspicious.
To have no confidence in (something or someone).
To be wary, suspicious or doubtful of (something or someone).
To suspect, to imagine or suppose (something) to be the case.