Reconstructions

PS
*raḳḳ- - turtle (SED II No. 190; Kogan 2011: 211)
PS
*rkṣ̂ - to tread, to trample; to kick (LS 400)
PS
*rḳḳ - to be thin
PS
*rVm- - kind of skin ulcer; mole, mark on the skin (SED I No. 233)
A biconsonantal root with various ways of triconsonantization throughout Sem.
PS
*ršˁ - to be wicked, ruthless (Kogan 2015: 457)
PS
*sbˀ - to trade in wine or beer (HALOT 738, Kogan–Krebernik 2021b: 687)
PS
*sVḥ/ḫVṭ- - kind of insect (SED II No. 192)
Not fully reliable because of the doubtful status of the Akkadian term.
PS
*skr - to obstruct (HALOT 755, Kogan–Krebernik 2021b: 686)
PS
*saḳʷāt-/*saḳāt- - kind of bird (SED II No. 194)
PS
*SVlw- - quail (SED II No. 195)
No satisfactory explanation for the irregular sibilant correspondences in the present root has been suggested so far. In LSyr. and LS the Hbr. form is thought to be an Arabism but the reverse development is proposed in TWAT VII 802. An Aramaism in Arabic is suggested in Jeffery 1938 177 (as rightly observed by Jeffery, salwā in the Qurˀān is not attested outside the rendering of the corresponding Biblical story). It is important to stress that the correspondence Hbr. ŝ ~ Soq. š is particularly difficult: it does not fit either PS *ŝ or PS *ŝₓ whereas no mutual influence can be supposed in this case.