1An adverb meaning 'so to speak' or 'as it were', used to describe something by comparing it to something else.
この店は、いわば街の台所のような存在だ。
This shop is, so to speak, like the town's kitchen.
彼はいわば私たちの先生のような人だ。
He is, in a way, like a teacher to us.
その考え方は、いわば時代遅れの発想だ。
That way of thinking is, so to speak, an outdated idea.