Well if its a "real word" may depend on dialect, or where your from specifically. There are many words in Texas not really recognized as "real words" like "y'all" or many things like that. Perhaps it is a word somewhere. But I have never heard it. Remember, language is like a liquid, always shifting, and changing.
once upon a time. i will never go there again.
It tells you to find another term for the noun used for example the noun in the sentence is John Proctor, you just need to identify what is John Proctor. It could be like this “John Proctor, a cardiologist (blah blah)” so the appositive that i wrote is cardiologist because it describes john proctor as a doctor.