I am pretty sure the word "metaphilosophy" is the only word for "philosophy of philosophy", but I wasn't quite sure it was the only word. Is there any other word that could be used as a synonym? Because you would think there would be other words, but upon trying to find related words, I couldn't find anything that matched the criteria.
Using a thesaurus, I got these:
I am thinking there could be a word that meant "philosophy above philosophy" or some variant thereof that could have a similar meaning, but I couldn't find any such term. In law, you have the concept of "Law of laws", but I am wondering if there are similar concepts.