no turning back
- idiom
- There would be no turning back now.
I already made that commitment and there was no turning back in my mind.
- I already made that commitment and there was no turning back in my mind.
Examples
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Times have changed, and hopefully, there is no turning back to those dark days.
Blog text (26) -
It is the point beyond which there is no turning back.
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I already made that commitment and there was no turning back in my mind.
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For he knew there was no turning back.
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After this, there is no turning back.
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You go down that road, there is no turning back.
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But once we started, we knew there was no turning back.
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Clearly, we have arrived at a point at which there is no turning back.
Academic text (2001) -
But once you begin, there's no turning back.
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Once you make that choice, there is no turning back and you must see it through.
Synonyms
Not able to be changed back to how it was
A moment in a process after which you cannot go back
A point of no return when a decision cannot be changed
Antonyms
How Final
Surface Forms
Morphology
The meaning 'a point beyond which a decision or action cannot be reversed' is directly derivable from combining 'turning back' (reversing direction) with 'no' denying that possibility. This spatial/motion metaphor and the 'no + gerund' pattern are cross-linguistically common and follow standard English composition, so a B1 learner who knows the constituents should understand it.
Etymology
No turning back comes from the image of crossing a road or bridge after which the way is closed or burned, so you really cannot turn back. That's why the phrase means a decision or action 'cannot be reversed' and you must keep going.