Effervescency is the process of fizzing or bubbling caused by the escape of gas from a liquid. Synonyms for effervescency include bubbling, foaming, fizziness, effervescence, carbonation, sparkle, liveliness, vivacity, animation, and zestiness. These terms describe the level of activity and movement within a substance, often seen in drinks, medicines, or natural phenomena such as hot springs. Such terms can also be used figuratively to describe a lively and enthusiastic personality, such as a person's effervescent personality. The word effervescency is often used to describe the appearance and behavior of substances, while synonyms add additional descriptive qualities to the original term.