Duolingo is the most popular way to learn languages in the world. Best of all, it's 100% free!


Old words won't strengthen

I have been using Duolingo inconsistently for about four years and decided that now is the time to actually dedicate time to it, strengthen all my skills and learn new skills. I have a a completely gold tree (up to my current skill) but i have 405 words that are not on full strength. It seems like no matter how many times i "Practice Weak Skills" this number doesn't change. Any ideas?

3 years ago