Semantic Change

You have probably seen a dirt path cutting straight across a campus lawn. The first person to walk it was just taking a quick shortcut. But someone else saw the trampled grass and followed the footsteps.

Weeks and months go by, and grass stops growing there altogether. Eventually, the school might even pave it with stones, turning it into an official walkway. Nobody officially decreed it—the route people walked most often became the actual road.

Word meanings shift in the very same way. One person tries using a word in a fresh, slightly different way. If the message gets across, listeners start copying it. When that accumulates over generations, the new meaning ends up feeling much more natural than the original.

That is why semantic shifts usually take generations. While some catch on fast, most happen so gradually that people never notice during their own lifetimes—until they open an old book and realize the words mean something entirely different.

In historical Korean literature, the word *eorida* (어리다) was used to mean 'foolish.' Being untaught and being young often looked alike to onlookers. As people kept stepping into that overlap, the word gradually shifted to mean 'young.' Even today, traces of the old meaning survive in expressions like *saenggagi eorida* (생각이 어리다), meaning 'naive or immature in thought.'

Other desire paths branch outward, expanding a word's scope. The term *baksa* (박사) began as an ancient title for government scholars teaching the classics, evolved in modern times into an academic doctorate (PhD), and is now used casually for anyone with deep expertise, like a 'dinosaur whiz' (*gongnyong baksa*, 공룡 박사). On the flip side, the word *jimseung* (짐승) originally referred to all living creatures before narrowing specifically to four-legged animals and beasts.

Sometimes, only the emotional tone shifts. A reverent title can stiffen over centuries until it feels distant or cold, while a lowly slang word can relax into casual everyday banter. The same sound with a brand-new meaning is the essence of semantic change.

You can hardly call a desire path across a lawn a 'mistake.' The same goes for language. Every standard definition we rely on today was once just an uncharted footprint made by an adventurous speaker.

Still, not every footstep turns into a paved road. Far more slang terms flare up for a single season and vanish forever. A new meaning only makes it into the dictionary when countless people adopt it across generations. Dictionaries do not pave the roads; they simply draw maps of the paths people have already made.

This is different from words that merely sound alike by accident. In Korean, the words for boat (*bae*, 배) and pear (*bae*, 배) sound identical, but they spring from completely separate historical roots and have coexisted for centuries. That is just a homophone. True semantic change occurs when a single word travels through time and steadily drifts to a new destination.

That is why reading older literature works best when you do not force modern definitions onto ancient words. It helps to imagine where people were actually walking back then.