What is "unrepeated"

Usage examples of "unrepeated".

Those who think they remember even such a momentous matter as the battle of Waterloo recall now probably but half-a-dozen episodes, a gleam here, and a gleam there, so that what they call remembering the battle of Waterloo, is, in fact, little more than a kind of dreaming - so soon vanishes the memory of any unrepeated occurrence.

Deep impressions are also made by the repetition, more or less often, of a feeble impression which, if unrepeated, would have soon passed out of our minds.

I submit, also, that he could not have left it unexplained, nor yet as an unrepeated expression not introduced till late in his work, if he had had any idea of its pregnancy.