Dictionary / Vocabulary / 後生大事
ごしょうだいじ
with religious zeal; with utmost devotion; take great care of
彼女はそれを後生大事にとっておいた。
She held on to it for dear life.
そんなガラクタを後生大事に持っていてどうするの、と言われても僕には宝物なんだけどな。
People ask me 'why would you want to cherish a piece of junk like that?' But this little beauty means the world to me.