山積み

pile, heap

noun Rare #33,881
pile, heap Often describes things piled up in large amounts, especially work or tasks that have accumulated.
JA: やるべき仕事が山積みになっている。
EN: There is a pile of work that needs to be done.

テーブルの上に手紙が山積みになっている

Letters are piled up on the table.

書類山積み何かお手伝いしましょうか

You have a mountain of paperwork. Can I help with anything?

— レベッカ (1940)

まだやることが山積みだよ

I still have a mountain of things to do.

やらなければいけないことが山積みなんだ

I have a mountain of things I need to do.