How to say "groom, bridegroom" in Arabic

The male partner to ʿarūs (bride). Hebrew has its own arus/arusa (אָרוּס/אָרוּסָה, 'fiancé/fiancée') — the Academy of the Hebrew Language's dictionary compares this root, א-ר-ס, directly to Arabic عرس ('wedding'). It's a different, samekh-spelled root from the biblical betrothal root א-ר-שׂ behind erusin ('engagement'). The sound match is still irregular — regularly, Hebrew ע should answer Arabic ع, not א — so call it a real but non-textbook connection. Either way, in Arabic he's already the groom, not merely engaged.