I suppose this has been addressed in the Forum before, but I don’t know how to find it…
Is there a way to “start over” in a language without closing out my account? (I don’t want to start over in all my languages, just one.)
I know I can delete all my lingqs…It takes a long time, but it is possible…But is there a way to get rid of the words that I marked as known the first time around?
I’m thinking not, but it never hurts to ask!
The only way to remove the words from Known is to highlight them all and create LingQs of them. It’s just as you suspected 
I suspect you’re correct in assuming this issue has been brought up before, but in any case here’s an FAQ question that is tangentially related: Lesson Help
Cheers
Thanks.
It would be great to have a “reset” function for a language.
I agree with Vera!
Can I ask why you would want to reset or start all over in a language?
I’m sure some of this has to do with learner personality, but for me, just now, it also has to do with “refining” the way I use Lingq. As I use it longer, I learn how to use Lingq better…
So - when I started studying Russian at Lingq about a year ago, I was happy to accept as “known” any word I could figure out from the context of the lesson. That means that there are hundreds of words that the system “thinks” I know, but that are totally unknown to me when I see them again. (I don’t do this anymore.)
Moreover, I used to study straight through a series, taking the next lesson automatically. But that meant that I was often opening lessons that had many new words in them, which, in my newest languages, I find overwhelming. So I learned to rank lessons by the number of unknown words, taking next the lessons with the least unknown words.
Because I’m not devoting large amounts of time to Russian, just nibbling the edges as it were, I really want to open lessons whose vocabulary is almost all familiar to me, with the exception of, say, a dozen words. But I can’t do that because of my earlier “folly”!
Another reason could be the wish to start from the beginning after a break.
BTW, I took care of my problem by opening another account. Maybe by the time I get tired of the restrictions (I have no problem with them) of a free account, I’ll feel ready to this account (for Russian).
yes we need a way to delete some of the words we’ve saved. If I saved a known word by mistake, I need to have the choice to “un-save” them. 
I had a similar problem when I first started about a week ago. I already had a bit of German vocab under my belt so I just clicked known on any word that I knew. Then I realized that there was no LingQ created when I did that so I wouldn’t get any review of those words. I found that if I go back and highlight the word with my mouse it will turn blue again and I can create a LingQ. It is a little bit cumbersome to do this, but it does work.
But I could see the advantages of having a RESET button on a lesson that just turns all the words blue again. I don’t know how hard that would be to implement, but I wouldn’t think it would be really difficult.
I agree with Vera. I do that also: study a language and then abandon it for a long time, so that any previously marked words are as good as unknown! What I used to do is deleted my whole list of lingQs and start a new one, but then there was a ‘delete’ option for all selected lingQs. Has this been changed?
@ssurprize - The batch delete function is only available to Basic, Plus or Premium members.