incredulous
adjective
[ ɪnˈkrɛdjʊləs ]
• (of a person or their manner) unwilling or unable to believe something.
• "an incredulous gasp"
Similar:
disbelieving,
unbelieving,
doubtful,
dubious,
unconvinced,
distrustful,
distrusting,
mistrustful,
mistrusting,
suspicious,
questioning,
lacking trust,
cynical,
sceptical,
wary,
chary,
Origin:
16th century: from Latin incredulus (from in- ‘not’ + credulus ‘believing, trusting’, from credere ‘believe’) + -ous.