atheist atheism • atheistic · · · Info · Definitions · Synonyms · Characters · · atheist · · Text Latin · · Script 7 · · Length Definitions · · · (noun) someone who denies the existence of god. · · Noun Definition 1 (adj) related to or characterized by or given to atheism. Synonyms: atheistic, atheistical. Example: "Atheist leanings." · · Adjective Definition 1 Synonyms · · · atheistic · · Synonym 1 atheistical · · Synonym 2 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 s latin small letter s U+0073 t latin small letter t U+0074