expression
in a manner of speaking; so to speak; as it were
Used to soften a statement or introduce a metaphorical or approximate description. Often inserted parenthetically.
彼は、言ってみれば、このプロジェクトの心臓部だ。
He is, so to speak, the heart of this project.
言ってみれば、人生は長い旅のようなものだ。
In a manner of speaking, life is like a long journey.