ALT Replacing "master" in the naming system. If using master to express prioritization, then instead use main, primary, or principal If using master to refer to the source for replication, then instead use source or main If using master to express control, then instead use leader/leading, active, or controller If using as an adjective before a noun, then instead use main, primary, principal. If using to imply someone's skill, then you can proceed as usual.