This community doesn't seem too vulnerable to claiming 'ours is what rationality REALLY means', which is the most harmful part of all this. So I wouldn't worry. If you keep forgetting others might use the term differently, it's a good sign that you might want to read other sources on connected issues.
This community doesn't seem too vulnerable to claiming 'ours is what rationality REALLY means'
YMMV. I see quite a bit of that sort of thing. (e.g., where it seems to me to be assumed that "rationality", let alone "rationalism", is what we do here and not what we don't do here.) It's a natural tendency.
You see, I've seen the word "rationalism" used to mean all five of these things at different times:
Edited to reinstate that proposed solution, since this discussion is presumably finished.