FAITHLESS
faithless, traitorous, unfaithful, treasonable, treasonous
(adjective) having the character of, or characteristic of, a traitor; “the faithless Benedict Arnold”; “a lying traitorous insurrectionist”
Source: WordNet® 3.1
Etymology
Adjective
faithless (comparative more faithless, superlative most faithless)
Lacking faith; lacking belief in something.
Not believing in God, religion, or a comparable ideology.
Unfaithful (said of people, towards their partners)
Not observant of promises or covenants.
Not true to allegiance, duty, or vows
Synonyms: perfidious, treacherous, disloyal
Serving to disappoint or deceive
Synonyms: delusive, unsatisfying
Anagrams
• flashiest, stalefish
Source: Wiktionary
Faith"less, a.
1. Not believing; not giving credit.
Be not faithless, but believing. John xx. 27.
2. Not believing on God or religion; specifically, not believing in
the Christian religion. Shak.
3. Not observant of promises or covenants.
4. Not true to allegiance, duty, or vows; perfidious; trecherous;
disloyal; not of true fidelity; inconstant, as a husband or a wife.
A most unnatural and faithless service. Shak.
5. Serving to disappoint or deceive; delusive; unsatisfying. "Yonder
faithless phantom." Goldsmith.
– Faith"less*ly, adv.Faith"less*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition