I seem to have stumbled into an argument that people are more passionate about than me. I mentioned I'd seen 'active/passive' used (in computer networking), and in that context, it 'seems alright' (in the sense of actively giving demands, vs. passively accepting them [and doing what it's told, of course])

If someone has made good-faith request not to use certain terminology (like Master/Slave), then I'm generally more interested in finding acceptable alternatives than I am in dismissing their concerns outright. If, at the end of a proper search for alternatives, nothing suitable can be found, then fair enough. I'd question the idea that it's really impossible to find something else though, but - for now at least - I'm sure that Dom/Sub isn't it.