PS

*ˀtm - to bring together (EDA I 528)

Var. ˀdm?

Akkadian
adāmu - to own a share in a common fund (CAD A₁ 95)

Or atāmu; OAss. only.

Ebla
a-ti-mu - group(?) (VE 978; EDA I 528)
Arabic
ˀdm - to mix, to associate, to unite in company (Lane 35)
Arabic
ˀtm - to assemble, to come together (Lane 13)
Sabaic
ˀtm - to bring together, to reconcile; to acquire property by mutual agreement (SD 8)
Minaean
ˀtm - réunir, rassembler (reunite, reassemble) (LM 8)
Qatabanian
ˀtm - to agree, to make an agreement (LIQ 17)
Amharic
addämä - to plot, to conspire; to summon, to invite; to be a member of a group in order to share in its sorrows and joys (AED 1300)
Soqotri
étom - to share, to do something together with someone (LS 78; CSOL I 479; Bulakh et al. 2021:276)