Proto-MSA

*ˁdg - to suck (Kogan 2015:548)

The origin is unclear.

Mehri
ˀādōg - to suck (ML 11)
Jibbali
ˁɔ́dɔ́g - to suck (JL 6)
Soqotri
ˁédog - to be suckled (a child or a young of an animal) (LS 299; CSOL I 485; CSOL II 402)