Danish short form of Katherine, from Greek 'katharos' meaning pure.
Karen is a Danish form of Katherine, part of a vast family of names that ultimately trace back to the Greek Aikaterine or related early forms. The exact origin of Katherine has been debated for centuries, but from late antiquity onward it became associated with the Greek word katharos, meaning "pure," and that interpretation strongly shaped its Christian reception. Karen emerged in Scandinavia as a vernacular form, especially in Denmark, and from there entered wider European and American use.
For much of the 20th century, Karen was stylish, polished, and thoroughly mainstream in English-speaking countries. It was borne by actresses, athletes, and public figures, but perhaps more importantly by an enormous number of ordinary women born in the postwar years, which gave it a familiar middle-class American resonance. Literary and artistic references also helped sustain it: Karen Blixen, the Danish author better known in some contexts as Isak Dinesen, brought a cosmopolitan intellectual sheen to the name, while Karen in novels and films often appeared as poised, modern, or emotionally complex.
Its cultural story changed dramatically in the early 21st century, when "Karen" became internet shorthand for a stereotype of entitled or demanding white femininity. That shift is a striking example of how public discourse can transform a name's social perception independent of its etymology or earlier history. Before that meme-driven turn, Karen had decades of ordinary respectability behind it; afterward, it became a rare case of a common given name acquiring a global caricature. Even so, its older layers remain: Scandinavian roots, a long connection to Katherine, and a history as a crisp, elegant name that once signaled modernity rather than mockery.