Origin Story
People usually assume the "beolgeosungi" in cheondung-beolgeosungi means "a naked person," but the origin handed down is a surprise. Here, beolgeosungi is said to be an old dialect word for a dragonfly — specifically the red dragonfly that stitches the autumn sky in crimson. This red dragonfly flits about without a hint of fear even as thunder crashes and rain pours down. From the image of something that darts heedlessly on despite the danger, people came to call a fearless, harum-scarum person a "cheondung-beolgeosungi" — a "thunder dragonfly." That said, others read beolgeosungi as a naked child, interpreting the word as "a heedless kid running around with no clothes on even as thunder strikes," so it's hard to declare which reading is the true one. Either way, the picture is the same: a reckless soul who charges on, fearless even in the face of danger.
A red dragonfly flying fearlessly through the thunder. To some its recklessness looks like foolishness, but in certain moments it can look just as much like courage that knows no fear.
Meaning Evolution
How It Is Used
Being new is no excuse to barge in everywhere like a "cheondung-beolgeosungi," all heedless nerve.
As a kid I tore around the neighborhood like a cheondung-beolgeosungi, fearing nothing.
He rushed in like a cheondung-beolgeosungi, with no idea of the danger, and got hurt.
Related Words
Memory Hook
Thunder + beolgeosungi (red dragonfly) → the red dragonfly that flies fearlessly through thunder → a fearless, heedless soul.
"The red dragonfly that flies through thunder knowing no fear — its recklessness became another name for the heedless."