Zeyde is the historical Yiddish word for grandfather. See also Bubbe (Grandmother). Though it is a term that is perhaps diminishing in popularity with the 2020 election it came into the vernacular as Bernie Sanders become known as Zeyde or Zayde Bernie. This was perhaps the largest injection of Yiddish into the political and mainstream world since Joe Lieberman used the word chutzpah on the campaign trail with Al Gore.