skeptical

(s) denying or questioning the tenets of especially a religion
- a skeptical approach to the nature of miracles
disbelieving, sceptical, unbelieving,
(s) marked by or given to doubt
- a skeptical attitude
- a skeptical listener
doubting, sceptical, questioning,

Synonyms

disbelieving sceptical unbelieving doubting questioning

Words of close approximity

skeptically