agnosticism
apostasy
backsliding
denial
desertion
disbelief
discredit
faithlessness
fall from grace
gentilism
godlessness
heresy
impiety
impiousness
inability to believe
incredulity
infidelity
irreligion
irreverence
lapse
lapse from grace
minimifidianism
misbelief
nonbelief
nullifidianism
recidivism
recreancy
rejection
secularism
unbelief
unbelievingness
undutifulness
religious orientation
atheist
atheistic
atheistical
avarice
blasphemy
drunkenness
fatalism
idolatry
immorality
materialism
naturalism
obscenity
pantheism
pessimism
profaneness
rationalism
scepticism
sedition
sensuality
socialism
theism