1. (

• doubting ,
• questioning ,
• skeptical ,
• sceptical

) marked by or given to doubt; "a skeptical attitude"; "a skeptical listener" ;

2. (

• disbelieving ,
• skeptical ,
• sceptical ,
• unbelieving

) denying or questioning the tenets of especially a religion; "a skeptical approach to the nature of miracles" ;