軽い
かるい · karui · JLPT N5 · i-adj
light
🪶 軽 = 車 cart + 巠 straight path: a cart that runs straight is light
The left side 車 is a cart; the right side originally marked a straight, unobstructed run. A cart that rolls easily carries little weight, so: light. Sound hook: karui is nearly carry — easy to carry means light, and by extension minor or not serious.