One that doesn’t fit with your later claim that it isn’t derogatory so both assertions cannot be true.
There is nothing in the definition that says illegal is a derogatory term. Remember when you forgot about the word sometimes.
The word you used doesn’t even mention people so what is it to which you are referring when you use it?
The first 3 words in the definition of illegal are “a person who”. When I say illegal I’m referring to a person who has entered or resides in the US illegally.