The quality of being enduring; the capacity to last, persist, or remain relevant over extended periods.
From 'enduring' plus '-ness' suffix (from Old English '-nes'), forming an abstract noun describing the inherent quality of lasting or persisting.
The 'enduringness' of Shakespeare's sonnets means they still grip us 400 years later—it's not just that they survived, but that their emotional truth refuses to fade, a quality writers pray their work possesses.
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