Where does “חָמֵשׁ” come from?

חָמֵשׁ (Hebrew) comes from Proto-Semitic ḫamš- — five.

Ancestry of “חָמֵשׁ”, step by step

Step	Language	Word	Meaning
1	Proto-Semitic	ḫamš-	five

חָמֵשׁ — Etymology, Origin & Word History | Etymology Explorer