Ebla

da-dum - uncle (VE 1161)

corresponds to Sum. PA₄.MU; see discussion in Krecher 1984: 146, Lambert 1995: 136, Krispijn 2004: 108, Catagnoti 1998: 187; Kogan 2014: 94–95

*dād- - paternal uncle (Kogan 2014: 93)

An eventual relationship with Akk. dādu ‘love-making; object of love, darling, favorite’, Hbr. dōd ‘beloved; love’ is also conceivable