point of no return
US /pɔɪnt əv noʊ rɪˈtɜrn/
UK /pɔɪnt əv noʊ rɪˈtɜrn/
1.
the stage in a process when a decision or action cannot be changed or reversed
:
•
Once we launch the rocket, we've passed the point of no return.
•
After signing the contract, there was no turning back; we had reached the point of no return.