Buoyant is an adjective used to describe something that is able to float on water or move lightly and gracefully. Synonyms for the word "buoyant" include words like lively, animated, vivacious, energetic, spirited, and lively. These words are often used to describe a person's personality or character. Other synonyms for buoyancy includes "floaty", "bouncy", "light", and "airy". These terms are often used to describe an object or material that is light and has the ability to float. The word buoyant can also be used to describe a person's mood or spirits, for which synonyms include "cheerful", "optimistic" and "positive".