buoyant
Concise Oxford English Dictionary © 2008 Oxford University Press:
buoyant/ˈbɔɪənt/
▶adjective
- 1 able or tending to keep afloat.
- 2 cheerful and optimistic.
- 3 (of an economy or market) engaged in much activity.
– derivatives
buoyancy noun,
buoyantly adverb.
buoyancy noun,
buoyantly adverb.
– origin C16: from Fr. bouyant or Sp. boyante, boyar ‘to float’.
'buoyant' also found in these Oxford entries:

