Dictionary / Vocabulary / 井の中の蛙
いのなかのかわず
person who is ignorant of the real world; frog in a well
Also written 井の中のかわず
世間知らずにもほどがある。井の中の蛙大海を知らず、ということかね。
I can't believe you're so clueless. You're like a babe in the woods.
井の中の蛙、大海を知らず。
He who stays in the valley shall never get over the hill.
井の中の蛙。
Person ignorant of the real world.