Seltzers, also known as sparkling water, has grown in popularity due to its refreshing taste and low calorie count. If you're not a fan of using the word seltzer, there are plenty of synonyms you can use to describe this beverage. Some common synonyms include carbonated water, club soda, fizzy water, and soda water. Other unique options that could potentially be used as synonyms include bubbly water, sparkling mineral water, and effervescent water. No matter which synonym you choose to use, all of these words convey the same bubbles and fizz of a crisp, cold glass of seltzer.