- daidein
- daddy, Irish daidín, daid, Middle Irish datán, foster-father, datnait, foster-mother, Welsh tad, Cornish tat; Latin tata; Greek $$Gtétta; Lithuanian tety/tis, Church Slavonic teta; Sanskrit tatás. English dad is borrowed from the Welsh (Skeat).
Etymological dictionary of the Gaelic language. Alexander Gairm Publications. 1982.