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Synonyms for buoyancy

noun

  1. Lightness

    levity, ethereality, buoyance, airiness, weightlessness, floatability; see also lightness 2.

  2. Cheerfulness

    gaiety, good humor, resilience, lightheartedness; see happiness 1, 2.

See buoyancy in Webster's New World Roget's A-Z Thesaurus II

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