If you used a word only for yourself and didn’t speak to anyone else about it, would it still be considered a connotation? If not, is there another word for it?
I’m not certain exactly what you mean. But you might tend to think of yourself as “slender” and someone else the same size as being “scrawny.” You would not have to mention this to anyone, but the connotations would be different for you in your own thinking.
There’s no rule saying connotations must be spoken aloud or shared.
I’m not sure I understand your question fully though, could you be a bit more specific?