まぶしい
まぶしい · mabushii · JLPT N3 · i-adj
dazzling
☀️😎 ma- = eye, as in まぶた eyelid: light so bright your eyes squint
The ma- at the start is the old word for eye (目), also found in まぶた (eyelid) and まばたき (blink). Its close cousin まばゆい is written 目映い, eye + shine. まぶしい is light that is too much for the eyes.