That's a somewhat tough one; most of the worlds that come to my mind are on the negative side.

I think the most positive word I can use for 2020 is "connection." In spite of everything else, it was a year where staying at home with the computer a lot resulted in our getting in touch with a number of people we'd lost touch with... and, in some sense, we also ended up connecting more with people around us than usual... perhaps a reminder that when we are free to do things, we tend to take that for granted.

Happy New Year to you!