Arabic

ḫsr - to suffer loss or diminution (Lane 736)

PWS
*ḫsr - to be deficient; to lose (DRS 1012; Kogan 2015: 86)

PWS *ḫsr ‘to be deficient; to lose’ has been often compared to Akk. ḫesēru ‘to blunt, to chip, to trim’. If accepted, this comparison certainly implies the priority of the Akkadian meaning and, hence, points to a shared semanitc innovation in PWS