athematic \|ā+ ̷ ̷| ̷ ̷ ̷ ̷\adjective Etymology:a- (II) + thematic 1.of a verb or class of verbs: having no thematic vowel < Sanskrit as-ti “he is”, Greek es-ti, Latin es-t are athematic verbs > 2.music: not based on the repetition or elaboration of themes < an athematic style >