point of no return

Idioms & Phrases

point of no return

The place in a course of action beyond which reversal is not possible. For example, Once the contract is signed, we've reached the point of no return. This expression comes from aviation, where it signifies the point where an aircraft does not have enough fuel to return to the starting point. [c. 1940]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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