Where does “Halicarnassus” come from?

Halicarnassus comes from Latin Halicarnassus, borrowed from Ancient Greek Ἁλικαρνασσός, a place name of uncertain ultimate origin.

Ancestry of “Halicarnassus”, step by step

Step	Language	Word	Meaning
1	Latin	Halicarnāssus	—
2	Ancient Greek	Ἁλῐκαρνᾱσσός	—

Halicarnassus — Etymology, Origin & Word History | Etymology Explorer