*wšn - to sleep (SED I No. 82ᵥ)

possibly derived from the nominal root *šin-at- ‘sleep’

Ugaritic

yšn - to sleep (DUL 988)

It is only in Ugaritic and Hebrew that yšn functions as the main verb with the meaning ‘to sleep’.

Hebrew

yšn - to sleep (HALOT 447)

Arabic

wsn - être endormi d’un profond sommeil; être dans son premier somme; sommeiller (to sleep deeply; to slumber) (BK 2 1538)