Yeah, that. 
It seems like… maybe not.
It’s a principle of mine (and, I believe, of the NYState Building Code) that a residence ought to have at least one bedroom.
(Though I think, if you go in for tiny houses, that sometimes it can just be a loft.)
Hey, did anyone watch the Master’s tourn… I mean, the Primary tournament? Hidecki Matsuyama is the new Primary champion.
What about “Jedi Master”? Is that outdated, or sexist? 
Even if we look past concentration/labor camps in Russia and Nazi Germany that existed considerably more recently than ‘well over a hundred years ago’, do you really think that just because legal slavery ended, illegal slavery hasn’t continued on? That no one has been forced to work, against their will, for no pay? That humans aren’t still bought and sold on the black market?
That’s really going to play into the whole schoolgirl (or schoolboy) kink.
You mean the Augusta National Invitation Tournament?
Such a pity that those hucksters pressured the laudably modest Jones to endorse the change from the original dignified and impressive title “Augusta National Invitation Tournament” to the braggy pompous name “Masters”. Maybe now that the word “master” is getting somewhat deprecated, they’ll consider returning to the original name.
Or maybe not, since most people do perceive a difference in the connotations of the word “master” as used to mean “master of other people”—e.g., “master of the house” and especially “master and slave”—and “master” as used to mean “master of a craft or skill”.
And then there’s loadmaster, an air crew member responsible for loading, placing, and securing air cargo. Must be a holdover from the days of slavery. 
,
I haven’t heard of anybody suggesting a replacement for the term “loadmaster”, but I guess you woke folks are more au courant with these developments than I am.
Master Bates, however, is not actually a character in the UK Children’s TV show Captain Pugwash, despite rumours to the contrary.
So what is going to replace master/slave in the technical world?
I’m not sure there is a consensus, but some examples are controller/agent, controller/responder, primary/secondary, primary/replica. In just “master” terminology, Github itself is changing over the default branch from “master” to “main.”
You mean the master’s mate? 
As far as I know, academic master’s degrees are still offered, as are master mariner’s licenses.
On the technical side, I had some issues the other day with an audio “slave driver”. That’s what the documentation calls it.
Or master servant in the legal.
IMO, an unfortunate result is that such silly word play as this tends to make me less sympathetic to what I consider to be the very real issues related to discrimination/prejudice/unequal opportunity. I realize that is not fully rational and that there can be merit in addressing injustices both large and small. But a part of me feels like, “Fine! I’ll call it the principal bedroom. We’re all good now on race issues, right?”
Using “controller” is confusing because these devices are controllers anyway. Primary and secondary is neutral, but does not express how certain devices work. Likewise,I am sure there are cases where a slave device is not just a replica.
Ah well, PC runs riot once again.
I spent 30 years working in residential construction, and I reviewed several dozen plans for high end end custom residences every year.
I have seen the term Primary Bedroom exactly once, about 20 years ago. The client was British and he had brought over his own project managers, which was not typical.
At one point I had a conversation with them about the Primary Bedroom terminology, asking them if it was a common term in England. They told me it was also the first time they had encountered the term and they had assumed it was an American thing.
Until I stumbled on this thread, I never realized that the term might have been used because someone found the word “master” offensive. Over 95% of the plans I reviewed used the term Master Bedroom. The ones that didn’t just numbered it .
Typically, the “non-master” bedrooms were labeled Bedroom 1, Bedroom 2, etc. Every now and then, someone would number the larger bedroom intended for the owner(s) of the home in the same way, usually (but not always) it was Bedroom 1.
The homes I worked on usually had two bathrooms adjacent to the Master Bedroom and they were typically referred to as His Bath and Her Bath.
I remember the conversations about master-slave equipment configurations (which figured prominently into the technical aspects of my work). I agreed that terminology was problematic, but it wasn’t the word “master” that presented the problem, it was the other one.
This was where my head was going: why not number the bedrooms in order of the square footage of the room.
Largest = Bedroom #1 (“En suite,” if it has one)
Next largest = Bedroom #2
Wash. Rinse. Repeat.
If more than one bedroom is the exact same square footage (not at all unusual), then you can number them 3a and 3b.
If you’re going to prioritize (a) and (b) you might as well just call them 3 and 4.
I first heard en suite on HGTV shows - many of which are/were filmed in Canada. Always struck me as European, and affected in the US.
I never thought American language so impoverished that we needed to directly import a French term. And hell, enough Amurricans refer to a bedroom SUIT!
If I were in the business, I could imagine referring to a bedroom with attached bath. Maybe a primary bedroom with attached bath.
Our house has 3 bedrooms on the same level. One is clearly larger than the other 2. There are 2 bathrooms on the same floor, but neither is directly connected to the largest bathroom. When we remodeled, we didn’t see the need to change that. So - is the largest bedroom the master/principal/primary?
Next up - we need a new term for “Jack and Jill” bathrooms! What if a family has only 1 gender kids? Or what if the kids don’t identify as binary? 
The implication of my proposed taxonomy [pretentious douche mode OFF] is that 3a and 3b are the same size.
When it comes to, for example, parents trying to decide if they’ll have to figure out who gets the larger bedroom, they’d know at a glance that two of them are the same size.