Where does “ארבע” come from?

ארבע (Hebrew) comes from Proto-Semitic ʔarbaʕ- — four.

Ancestry of “ארבע”, step by step

StepLanguageWordMeaning
1Proto-Semiticʔarbaʕ-four

Words derived from “ארבע

Every word from Proto-Semitic ʔarbaʕ-
ארבע — Etymology, Origin & Word History | Etymology Explorer