Behn's unique achievement as an early professional woman writer has been the subject of much recent study.

This Council's work was a unique achievement in Buddhist history.

Since that time, they have been reprinted more than 75 times, a unique achievement in Icelandic literature.

These frescoes are a unique artistic achievement from this period.

Waddell's spell can only be seen as a unique achievement.

Anything else would only threaten her hard-won sense of unique achievement.

It was given in recognition of "unique achievements for the Nation and the Country".

I had not been sure he was serious about seeking some unique achievement.

It has been the essential guarantee of an achievement unique in European history.

It was a stunning development, a unique achievement in 30 years of baseball labor negotiations.