The word "lastingnesses" refers to the quality or state of being long-lasting or enduring. Synonyms for this word include durability, resilience, perseverance, longevity, permanence, consistency, stability, steadfastness, persistence, and endurance. These words describe the ability of something to withstand the test of time, whether it be a physical object like a building or a more abstract concept like a relationship or idea. Using these synonyms can add richness to your descriptions and help to convey the strength and enduring nature of the subject you are discussing.