impious
adjective
[ ɪmˈpʌɪəs ]
• showing a lack of respect for God or religion.
• "the emperor's impious attacks on the Church"
Similar:
godless,
ungodly,
unholy,
irreligious,
sinful,
immoral,
unrighteous,
sacrilegious,
profane,
blasphemous,
irreverent,
disrespectful,
apostate,
atheistic,
non-theistic,
agnostic,
pagan,
heathen,
faithless,
non-believing,
unbelieving,
disbelieving,
doubting,
nullifidian,
Origin:
mid 16th century: from Latin impius (from in- ‘not’ + pius : see pious) + -ous.