* διδάσκαλος (didaskalos): This means "teacher" but could be used for a master in the sense of a skilled craftsman or someone who teaches a craft or art.
* κυρίαρχος (kyriarchos): This means "ruler," "sovereign," or "lord," implying a master who holds power and authority.
* δέσποτης (despotes): This translates to "master," "lord," or "despot." It carries a stronger connotation of absolute power and often implies harshness or tyranny.
* κύριος (kyrios): This word means "lord," "master," or "owner." It's a more general term and could be used for a master of a house, a slave owner, or a more benevolent master.
The best choice will depend heavily on the specific situation and the nuance you want to convey.