Geez

zanma, zənām - rain (CDG 641)

PES
*zVnām - rain (Kogan 2015: 442–443)
original shape of the root is probably preserved in Akk , PES together with Sab ḏnm – must be due to dissimilation. Different directions of dissimilation in modern EthS (n >l, m > b) are phonetically unproblematic (Kogan 2015: 442-443)