the thin end of the wedge
成語所屬單字thin
the thin end of the wedge — 慣用語
1. A small action or event that is the start of something much worse.
1.慣用語
釋義
冰山一角
A small action or event that is the start of something much worse.
例句
The new fee is the thin end of the wedge for library services.
Many see the ban as the thin end of the wedge for free speech.