形容词

1. 心情愉快的；生气勃勃的
If you are in a buoyant mood, you feel cheerful and behave in a lively way.

2. （经济）繁荣的
A buoyant economy is a successful one in which there is a lot of trade and economic activity.

3. 漂浮的；漂起的
A buoyant object floats on a liquid.

1. characterized by liveliness and lightheartedness

e.g. buoyant spirits
his quick wit and chirpy humor
looking bright and well and chirpy
a perky little widow in her 70s

Synonym: chirpyperky

2. tending to float on a liquid or rise in air or gas

e.g. buoyant balloons
buoyant balsawood boats
a floaty scarf

Synonym: floaty