Semitic Etymological Database
Probably related to Gez. sadada ‘to drive out’, Hbr. šdd ‘to deal violently’ (Kogan 2015:104)
Possibly related to Arb. sdl ‘to let loose, to lower, to let fall,’ sadīl- ‘a thing that is extended across or sideways in the space from side to side’ (Lane 1333‒1334).