Repetition Level of Vocab.
I've noticed on individual vocabulary words, we can mark that we know this word and that it doesn't need to be practiced more. It would be great if we could do the reverse. There are some words that I know I don't know as well as duolingo thinks I do. I'm simply able to get them correct by context or process of elimination, but am not confident using it independently. I would love to be able to mark a words as "actually I don't know this word yet" or "needs more practice" or something of that nature.