impious (adj.)
- apostate
- arch
- atheistic
- blasphemous
- casual
- coltish
- contrary
- devil-may-care
- disobedient
- elvish
- fallen
- flippant
- fresh
- frolicsome
- froward
- giddy
- godless
- iconoclastic
- impish
- iniquitous
- irreligious
- irreverent
- lapsed
- mischievous
- offhand
- pert
- perverse
- profanatory
- profane
- puckish
- recreant
- renegade
- roguish
- sacrilegious
- saucy
- scandalous
- sinful
- sportive
- unchristian
- undutiful
- unfaithful
- ungodly
- unhallowed
- unholy
- unrighteous
- waggish
- wayward
- wicked
- wrongheaded
'T is impious in a good man to be sad.
When vice prevails, and impious men bear sway,
The post of honour is a private station.