*ˁimm(-a) - together with
(Arakelova 2001:41; Huehnergard 2005:190; Hasselbach–Huehnergard 2007:420; Kogan 2015: 182)
Lipiński (1997:465) derives this preposition from the PS verbal root ‘to be common’. More cautious treatments can be found in Gesenius 1910:297 (”ˁim- (connexion ?) with”) and Tropper 2000:763 (”ˁm /ˁimma/ (Subst. /ˁimm-/? “Gemeinschaft” im Ak.)”).