ATHEISTICAL
atheistic, atheistical, unbelieving
(adjective) rejecting any belief in gods
atheist, atheistic, atheistical
(adjective) related to or characterized by or given to atheism; “atheist leanings”
Source: WordNet® 3.1
Etymology
Adjective
atheistical (comparative more atheistical, superlative most atheistical)
Of or relating to atheism; atheistic.
Synonyms
• atheistic
Antonyms
• theistical
Source: Wiktionary
A`the*is"tic, A`the*is"tic*al, a.
1. Pertaining to, implying, or containing, atheism; -- applied to
things; as, atheistic doctrines, opinions, or books.
Atheistical explications of natural effects. Barrow.
2. Disbelieving the existence of a God; impious; godless; -- applied
to persons; as, an atheistic writer.
– A`the*is"tic*al*ly, adv.
– A`the*is"tic*al*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition