PWS

*zVl-t- - except; beside (Arakelova 2001:42)

Hebrew
zūlā - except, only (HALOT 267)
It is assumed in HALOT 267 that this preposition is derived from the verbal root zwl ‘to be worthless, cheap’ (HALOT 266), which is hardly probably (Arakelova 2001:42).
Harari
zalta/zältā-m - outside of, except, beside (EDH 166)