PS

*ˀimm- - mother (DRS 22; Kogan 2014: 88)

Akkadian
ummu - mother (CAD U/W 120, AHw. 1416)
Ebla
ù-mu-mu - mother (VE 1044; Krebernik 1983: 37)
equated to Sum. AMA.MU
Ugaritic
ˀum - mother (DUL 69)
Hebrew
ˀēm - mother (HALOT 61)
Jewish Babylonian Aramaic
ˀimmā - mother (DJBA 116)
Syriac
ˀemmā - mother (LSyr. 23, SL 52)
Mandaic
ˁma - mother (MD 352)
Turoyo
emo - Mutter (mother) (RW 145)
Arabic
ˀumm- - mother (Lane 89)
Sabaic
ˀm - mother (SD 5)
Minaean
ˀm - mother (LM 5)
Geez
ˀəmm - mother (CDG 22)
Argobba
əm - mother (Leslau 1997: 190)
Mehri
ḥām - mother (ML 5)
Jibbali
ˀɛ́m - mother (JL 3)
Soqotri
am - big (f.) (LS 63)

In the Vienna Corpus the concept “big” is expressed by the suppletive combination of eb for the masculine vs. am for the feminine. Numerous illustrations can be found in D. Müller’s special note on the subject (Müller 1909:347-351), such as bilâd ʔéeb/ḥadíboh ʔam ‘die große Stadt’. In the dialect of the Da’rho tribe, upon which CSOL I is based, this usage is obsolete: the adjectives am and eb are restricted to the comparative expressions like mḥámmad eb ʕan áḥmad ‘Muhammed is bigger than Ahmad’ or fáṭma am ʕan sál’wa ‘Fatima is bigger than Selwa’, but still current in their original basic function in the Western Soqotri dialects, according to a personal communication from Miranda Morris.
(Kogan 2015: 487)

Soqotri