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Continuing or remaining for a long time; enduring: a lasting peace.

last′ing·ly adv.
last′ing·ness n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.lastingness - permanence by virtue of the power to resist stress or force; "they advertised the durability of their products"
tensile strength - the strength of material expressed as the greatest longitudinal stress it can bear without tearing apart
indestructibility - the strength to resist destruction
permanence, permanency - the property of being able to exist for an indefinite duration
persistence, continuity - the property of a continuous and connected period of time
changelessness - the property of remaining unchanged
everlastingness - the property of lasting forever
References in classic literature ?
He had not been inside the Museum, actually, since he and Hilda used to meet there; sometimes to set out for gay adventures at Twickenham or Richmond, sometimes to linger about the place for a while and to ponder by Lord Elgin's marbles upon the lastingness of some things, or, in the mummy room, upon the awful brevity of others.
For five cents I could buy five "cannon-balls"--big lumps of the most delicious lastingness.
Beyond what Vitrano provides as necessary (and sufficient) conditions for happiness, there will usually be included such things as endurance or lastingness, well-groundedness or rationality, and a richness or depth that takes it beyond mere satisfaction.
And yet, this here: A jar, a tin plate, a half-peeled lemon, Walnuts, a loaf of bread, last--and so strongly It is hard not to believe in their lastingness.