Many linguists believe these names are substitutes, created because speaking or writing the actual word for bear was considered taboo. As those in the wizarding world of Harry Potter were taught never to say “Voldemort,” northern Europeans often did not say their actual word for bear, perhaps because it was believed saying the bear’s true name could summon one. In any case, this taboo was so effective that today we are left with only the replacement word for bear—essentially, we call them “You Know Who.”
