godless (adj.)

• agnostic
• atheistic
• blasphemous
• damned
• evil
• graceless
• hellish
• impious
• iniquitous
• irreligious
• lost
• profane
• reprobate
• sacrilegious
• sceptical
• sinful
• unbelieving
• unchristian
• unconverted
• ungodly
• unholy
• unredeemed
• unregenerate
• unrighteous
• wicked