FT Professional Glossary
Cliff edge
A point where a situation changes very suddenly and completely in a damaging way, or where something suddenly becomes much worse
Example usage from an FT article:
Although higher earners can use various methods to stay on the right side of the cliff edge, new parents simultaneously navigating the tax and childcare systems face a steep learning curve.
Excerpt from "The madness of the £100,000 childcare tax trap"
