faithless (adj.)
- agnostic
- ambidextrous
- apostate
- artful
- atheist
- atheistic
- capricious
- changeable
- changeful
- collaborative
- conscienceless
- crafty
- crooked
- cunning
- deceitful
- derelict
- disaffected
- disbelieving
- dishonest
- disloyal
- double
- double-dealing
- double-faced
- double-tongued
- doubting
- duplicitous
- false
- fickle
- fluctuating
- heathen
- heretical
- hypocritical
- inconstant
- incredulous
- insincere
- irreligious
- pagan
- perfidious
- recreant
- renegade
- repudiative
- sceptical
- shifting
- shifty
- traitorous
- treacherous
- treasonable
- treasonous
- two-faced
- unbelieving
- unchristian
- unconverted
- unconvinced
- unfaithful
- unreliable
- unscrupulous
- unstable
- untrue
- untrustworthy
- wavering
So spake the seraph Abdiel, faithful found;
Among the faithless, faithful only he.
