buoy·ant 
(boiənt, byənt)
(boiənt, byənt)adj.
1. Having or marked by buoyancy: a buoyant balloon; buoyant spirits.
2. Lighthearted; gay: in a buoyant mood.
[Spanish boyante, present participle of boyar, to refloat a boat, from boya, buoy, from Old French boue; see BUOY.]
buoyant·ly adv.
- profession
- professional
- professionalism
- professionalization
- professionalize
- professionally
- professor
- professorate
- professorial
- professorially
- professoriat
- professoriate
- professorship
- proffer
- profferer
- proficiency
- proficient
- proficiently
- profile
- profiler
- profiling
- profit
- profitability
- profitable
- profitableness