To have no confidence in (something or someone).
To be suspicious.
To be wary, suspicious or doubtful of (something or someone).
To suspect, to imagine or suppose (something) to be the case.
Lack of trust or confidence; distrust, untrust.
To have a sickly feeling.
A prick of the conscience; a moral scruple, a pang of guilt.
A feeling of apprehension, doubt, fear etc.
A sudden sickly feeling; queasiness.