The phrase "a unique exception to" is correct and usable in written English.
It can be used when referring to a specific case or situation that deviates from a general rule or norm.
Example: "This policy has a unique exception to accommodate individuals with disabilities."
Alternatives: "a special case of" or "an unusual deviation from".
In Terekeka Territory, the Mundari Militia emerged as an unique exception to otherwise consistent denial that CAFF existed.
This stands as a unique exception compared to all of the other outgroup combinations.
"But Hermès is sort of a unique exception that has managed to grow and still stick to its roots," he said.
Our study shows that the finding of functionally reproductive diploid males in E. foraminatus [21] is not a unique exception, and not necessarily restricted to solitary wasps.
Seek a unique exception that exists of using blood to supply oxygen!
Raising India to the status of a strategic ally, he cut a unique exception in the global nonproliferation regime, proposing that India be allowed to keep its military stockpile even as it gained access to technologies and fuel for its civilian reactors.
But at least part of the appeal of this story is that it offers an astounding, even a unique exception, one that allows people around the world to think about miners without feeling a bit uncomfortable or even guilty.
Instead of obsessing over China's currency manipulation as if it were a unique exception in a world of untrammeled market forces, the United States must adapt to an environment where exchange rates and trade imbalances are managed consciously and have become a legitimate subject for debate in international forums like the Group of 20.
Kalighat painters often chose to paint mythological themes and Bengali day-to-day life; the paintings on the Tarakeswar affair were a unique exception.
