The Ionic Greek word άττα
Word άττα
a t t a
Transliteration atta
Meaning father
See also C. Luwian: ta-a-ti-iš ‘father’
Hittite: at-ta-aš ‘father’
Lycian: eti ‘father’

Comments
Word of anatolian origin, Hittite 'atta', Lydian 'ata', Latin 'atta'.

Other words that might be of interest
φρά̄τηρ ‘brother’