You see, I've seen the word "rationalism" used to mean all five of these things at different times:
- The belief that we should come to know the world through reason and experimentation, shunning intuition.
- The belief that we should come to know the world through reason and intuition, shunning experimentation.
- The belief that we should come to know the world through knowledge of (and correction for) cognitive biases, and knowledge of (and correct use of) probability theory.
- Being effective at believing things that are true and not things that are false.
- Being effective at doing things that are good and not things that are bad.
Edited to reinstate that proposed solution, since this discussion is presumably finished.
For my own part, I endorse being more precise and eschewing ambiguous labels altogether. I don't usually find it too difficult to talk about being explicit about the evidence and reference classes supporting my conclusions, or accepting counterarguments without becoming emotionally defensive, or whatever else I happen to be talking about.
But others' mileage clearly varies.