A relative of mine, long deceased, would often answer the how-are-you question with “medinary.” Family members have guessed that he combined part of medium and part of ordinary on his own to form the word. I did a quick Google search for it. Among the results I found one and only one non-medical instance of medinary used in the same way, in a 1955 Earl Tucker editorial in the Thomasville (AL) Times. Here's part of the passage containing it:
 Quote:
During the day lots of people asked me how I was feeling and I said fine how are you feeling and they were feeling fine too. Now I’m pretty sure not one of the thirty or more who asked me really cared whether I was fine, poorly, medinary or had a splitting headache.

The theory that our relative coined the word I now doubt.