buoyant

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buoy·ant / ˈboi-ənt; ˈboōyənt/ • adj. able or apt to stay afloat or rise to the top of a liquid or gas. ∎  (of a liquid or gas) able to keep something afloat. ∎ fig. (of an economy, business, or market) involving or engaged in much activity: car sales were not buoyant. ∎ fig. cheerful and optimistic: the conference ended with the party in a buoyant mood.DERIVATIVES: buoy·an·cy n.buoy·ant·ly adv.

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