*yṯw - to be

Akkadian

išû - to have (CAD I 289, AHw. 420)

Ebla

i-ša-wu /yiṯāwu/ - to be (VE 624, VE 789, Kogan–Krebernik 2021b: 689)

Ugaritic

ˀiṯ - presence, existence (DUL 120)

Lexicalised as a verbal functor.