PCS

*škn - to stay, to reside (Hasselbach–Huehnergard 2007:420; Kogan 2015: 219)

The meaning “to stay” is a passive transformation of “to place,” which is probably original for *škn in PS

PS
*škn - to place (Kogan 2015: 219)

Akkadian
sakānu - to settle down (Charpin 1994: 5–6)
A WS borrowing.
Ugaritic
škn - to stay (DUL 815)
Correct analysis of the relevant Ugaritic forms is sometimes difficult because of the graphical homonymy with the Š-stem forms of kwn ‘to be.’ Conversely, numerous examples parsed as belonging to the D-stem of škn with the meanings “to assign,” “to impose,” “to equip” in DUL may rather belong to kwn Š.
Hebrew
škn - to settle (HALOT 1496)
Syriac
škn - to settle, to stay (LSyr. 776, SL 1558)
Arabic
skn - be be calm, to dwell (BK 1 1115, Lane 1392)
Sabaic
s₁kn - to stay (Stein 2010:730)
Tigre
säknä - to dwell (WTS 191)
probably borrowed from Arabic
Mehri
səkūn - to dwell (ML 346)
probably borrowed from Arabic
Jibbali
skun - to dwell (JL 227)
probably borrowed from Arabic