adj. 25B6; adjective
a buoyant substance : ABLE TO FLOAT, floating, floatable.
a buoyant mood : CHEERFUL, cheery, happy, light-hearted, carefree, bright, merry, joyful, bubbly, bouncy, sunny, jolly; lively, jaunty, high-spirited, perky; optimistic, confident, positive; informal peppy, upbeat.
sales were buoyant : BOOMING, strong, vigorous, thriving; improving, expanding, mushrooming, snowballing.