The state of being endless; eternity or perpetuity(noun)
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Use "endlessness" in a sentence
"How can you speak so harshly of the lyrical "endlessness"?"
""How they reconcile such an endlessness, which is also such a narrowness, with what I believe is an instinctual need for a hierarchy with meaningful functions, we do not yet know."
"But Synecdoche, New York is not without its problems, the greatest of which is that it introduces a kind of endlessness that then consumes it."