"What does 'out of sorts' mean?" asked the Doctor. Then, before I could
reply, he continued: "I have often thought of that expression; it is a
good one; it means to say gloomy, depressed, mentally unwell, physically
ill perhaps. Yes, Willis is out of sorts. Out of sorts means mixed,
unclassified, unassorted, having one's functions disordered. One who
cannot separate his functions distinctly is unwell and, necessarily,
miserable. Willis showed signs of dementia; his brain is not acting
right. I think I can cure him."