Buoyant means able to float easily. A buoyant hull, buoyant in salt water, keep it buoyant.
Anything floats if it weighs less than the water it pushes aside, which is why a steel ship floats and a steel bar does not. Salt water is denser, so everything floats a little higher in it. Figuratively, a buoyant mood or market is cheerful and rising.
1adjectivebuoyantAble to float easily.
“Salt water makes you more buoyant, so it's easier to float in the sea than in a pool.”
2adjectivecheerfulCheerful and rising.
“She was in a buoyant mood all week after passing her driving test.”
buoyant is a quality of floating.
Proto-Germanic
*baukną
Frankish
*baukn — beacon
Old French
boue — piece of wood or cork that floats above an anchor to indicate where it is anchored
Middle Dutch
boeye — float, buoy
Middle English
boy
English
buoy
English, today
buoyant
Built from
From buoy + -ant. buoy comes from Middle English boy, boye, from Middle Dutch boeye (“float, buoy”), from Old French boue (“piece of wood or cork that floats above an anchor to indicate where it is anchored”) (modern French bouée), ultimately from Frankish baukn (“beacon”), from Proto-Germanic baukną. a doublet of beacon. Alternatively, and perhaps less likely (due to the unexplained shift in meaning), from Middle Dutch boeye (“shackle, fetter”), from Old French buie (“fetter, chain”), from Latin boia (“a (leather) collar, band, fetter”), from Ancient Greek βόεος, βόειος (“of ox-hide”), from βοῦς (“ox”), from Proto-Indo-European gʷṓws (“cow”). sign language was coined by Scott K. Lindell in 2003.
Etymology from Wiktionary, CC BY-SA