The point of no return
Definition 1 of 2
Pro Tip 1/3Metaphorical Use
Often used metaphorically to express a critical decision point after which there is no turning back. 
He knew that marrying her was the point of no return in his life.
Pro Tip 2/3Tipping Point
Can imply a tipping point where the situation will significantly change and you must commit. 
The campaign had reached the point of no return, they had to see it through.
Pro Tip 3/3Dramatic Situations
This phrase adds drama, often hinting at high stakes or irreversible consequences. 
This was it, the point of no return, the heist was about to start.
Never forget "The point of no return"
Humans forget easily. That's why you should download WordUp: Smart reminders, word games, AI practice, and much more!
WordUp Chrome Extension
As you browse the web instantly look up words you don’t know.
Get Chrome Extension