This example is from Wikipedia and may be reused under a CC BY-SA license.
However, the strictly rational dimension of the experiment is entirely repeatable, in a way which contrasts clearly with the nature of imagination as something unrepeatable.
Performance is unrepeatable and it is fascinating because it is unique and ephemeral.
They became emblems of history, rather than of nature, signifying the irreversible losses incurred in the course of "unrepeatable, heterogeneous time".
Equally, we need to encourage children's natural capacity and thirst for creating music in ways that are authentic and risky, unrepeatable and unpredictable as well as the repeatable and predictable.
We must always remember that this is a unique and unrepeatable period of development, which forms the personality of the individual.
From Europarl Parallel Corpus - English
The word is not exactly unrepeatable, but it might cause confusion.
From the
Hansard archive