Reconstructions

PES
*ṭnn - to be asleep (Kogan 2015:574)

May be related to PES *ṭnn ‘to be asleep’ or Arb. ṭnn ‘to die’.

PES
*ṭirs­ - molar tooth (SED II No. 275)

Cf. *ṣ̂irš- - molar tooth. A variant root?

PES
*ṭlf - to snatch, to abduct (Kogan 2015:574)

An connection with Proto-MSA *ṭlf ‘to skim off’ is not unlikely. (Kogan 2015:574)

PES
*wˁy - to be hot, to burn (CDG 603; Kogan 2015: 464)
The origin of Proto-EthS *wˁy ‘to be hot, to burn’ is unknown (cf. DRS 577).
PES
*wγṭ - to swallow (CDG 611; Kogan 2015: 78)
PES
*wald-/*lVd- - son (Kogan 2015:458)
“The original meaning of Proto-EthS *wald- (and *lVd-) ‘son’ was probably “boy,” as is the case of its immediate parallels in Hebrew (yäläd, HALOT 412) and Arabic (walad-, Lane 2966). All these terms are derived from PS *wld ‘to bear’, widely attested both withing and outside EthS (SED I No. 80v). Lack of lexical distinction between the meanings “son” and “boy”/”child” — similar to bēn vs. yäläd in Hebrew — observable throughout EthS is atypical for Semitic languages and might be due to the substratum influence.”
PES
*wlṭ/*lwṭ - to change (CDG 614; Kogan 2015: 464)
The origin of Proto-EthS *wlṭ/*lwṭ ‘to change’ is uncertain, but it might be related to PWS *lwṭ ‘to twist, to turn, to do a second time’.
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)
PES
*γurp - spoon, handle of a plow, plow (Kogan 2005: 190)
PES
*ˁrḳ - to reconcile (Bulakh—Kogan 2017:307)