This was one of those words that not only did I not know what it was, i couldn't even pronounce it.
It sounds like "psychotic" but is not at all related.
it's an adjective, and refers to sporadic movements.
The word shows up in this article that a curveball is just an optical illusion, whereas my brief thought that I could probably hit a curveball is an mental delusion.
The illusion is illustrated here. It's a lot of fun if you pretend that the blue spot is the Old Spice guy: "look at me. Look at the spinning ball. Now look back at me. I'm on a horse."
Better word: jerky (like an adjective, not like a noun, as in "dried beef.")
