to say nothing of something

成語所屬單字say

to say nothing of something — 慣用語

1. Used to introduce an additional fact that makes a situation even more extreme.

1.慣用語
釋義

更不用說

Used to introduce an additional fact that makes a situation even more extreme.

例句

The hotel was expensive, to say nothing of the food.

He was late, to say nothing of his rude behavior.