Bible Dictionaries
Atheistical

Webster's Dictionary

(1):

(a.) Pertaining to, implying, or containing, atheism; - applied to things; as, atheistic doctrines, opinions, or books.

(2):

(a.) Disbelieving the existence of a God; impious; godless; - applied to persons; as, an atheistic writer.

Bibliography Information
Webster, Noah. Entry for 'Atheistical'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​a/atheistical.html. 1828.