I was sitting at the card table this evening looking gormless (as I am wont to do) when it occurred to me to wonder, are the other players gormful? Is there such a word? Is there such a thing as gorm, that one can either have or lack?
According to merriam-webster.com, "gormless" does indeed mean "lacking in gorm", which was originally the middle-English word "gaum" or "gome", meaning "understanding, or attention". I would have to say that "gorm" as its own word has fallen out of the modern lexicon, though, and is not at all likely to be understood. (Hopefully someone who can do searches of the Corpus of English Language Texts or the like can provide extra information....)