*ḥrm has been often compared with Akk. ḫarimtu ‘prostitute’, which is far from evident either phonologically or semantically (v. Kogan 2011:111, with references to earlier studies where this comparison is accepted). Complete absence of *ḥrm from extant Ugaritic texts is noteworthy.
Von Soden's (AHw. 332) connection with Akk. ḫašābu (lexical lists only, meaning unknown) is a mere guess.