Where does “a-disiotso” come from?

a-disiotso (Tagalog) comes from Tagalog disiotso, from Spanish dieciocho, from Spanish ocho, from Old Spanish ocho, from Old Spanish oito, from Latin octō, from Proto-Italic oktō, from Proto-Indo-European oḱtṓw — sharp, pointed; sharp, pointed, edgy; sharp,...

a-disiotso (Tagalog): eighteenth day of the month