If I have to look a word up in a dictionary that is often the fault of the writer, too.
Word lists like this are gatekeeping understanding. What’s more fun are those words used by some groups a lot, but not widely known. I was reminded of this when walking down a road in London and seeing a TfL sign that read “This is a temporary bus stop in use whilst repairs are made to the nearby permanent bus stop”. Most non-Brits have never used or heard the word “whilst”, and yet it’s used all the time in the U.K.
There are more fun words out there too for which no English translations exist, but we should totally make mainstream English. I won’t list as there are so, so many… glad hygge is doing well in the U.K. though.