Karen means "pure". It is a Danish name, from the Greek word "Aikaterine". The name can also mean "clear" in French, but generally speaking, it means "pure" in most places.
In recent years, "Karen" has become an internet slang term and
meme used for entitled middle aged women (mostly targeted at female baby boomers and gen xers as of now). It's used for women who yell at employees, typically is the employee asks them to wear a face mask during a pandemic or if they make a
tiny mistake while doing their
job. They are also used for women who are
racist, xenophobic, anti-sematic, and
homophobic. They can be of any race or nationality. It's also used for women who feel that they don't have to listen to or respect authority, probably because they were never disciplined as
kids and got away with everything. It's also used for women who put down younger generations for no reason, yet
will get triggered if a teen says, "Ok boomer" to them. Also, they insult you based on your political or religious beliefs.
Person 1: "Man, that
lady is such a Karen!"
Person 2: "Her name isn't Karen."
Person 1: "I know, but she's acting like a Karen."
Person 2: "You mean she acts
pure?"
Person 1: "No! The exact opposite. I guess you haven't heard of the
meme."