Scotch and soda is a classic cocktail that has been enjoyed by many over the years. However, there are other words that can be used to describe this drink. Some synonyms for scotch and soda include highball, whiskey fizz, and scotch and seltzer. A highball refers to any drink that is made with a spirit and a carbonated mixer. A whiskey fizz is a similar drink that typically includes lemon juice and sugar. Scotch and seltzer is another way to describe scotch and soda, as seltzer is often used as the carbonated mixer. No matter what you call it, scotch and soda remains a delicious and refreshing cocktail.