ἄττα

Etymology 1
From, from. Cognates include 🇨🇬, 🇨🇬, 🇨🇬 and 🇨🇬.

Noun

 * 1) father; a mode of address by a younger to an elder
 * προσφώνησις νεωτέρου πρὸς πρεσβύτερον. ἄττα γέρον (Suda)

Etymology 2
Derived from with ἄ- perhaps from metanalysis of such expressions as πολλά σσα > πολλ'ἄσσα.