Godless \God"less\, a. Having, or acknowledging, no God; without reverence for God; impious; wicked. -- {God"less*ly}, adv. -- {God"less*ness}, n. [1913 Webster]
33 Moby Thesaurus words for "godless": agnostic, atheistic, blasphemous, damned, evil, graceless, hellish, impious, infidel, iniquitous, irreligious, lost, nonreligious, nullifidian, profane, reprobate, sacrilegious, sceptical, shriftless, sinful, un-Christly, unangelic, unbelieving, unchristian, unconverted, ungodly, unholy, unredeemed, unregenerate, unreligious, unrighteous, unsaintly, wicked