1 noun ability to floatbuacacht fem3 c m usnámhacht fem3 c m u2 noun FIN, ECON economic strengthbuacacht fem3 c m u3 noun confidence, optimismaigeantacht fem3 c m uspiorad masc1 c m uspleodar masc1 c m u4 noun of liquid, gasbuacacht fem3 c m uthe buoyancy of the gas drives the turbinebuacacht an gháis a thiomáineann an tuirbín