A whisky sour is a classic cocktail that has been a favorite for years. It is made with whisky, lemon juice, sugar, and sometimes egg whites. There are a few synonyms for the word "whisky sour" that can be used to describe this refreshing beverage. Some of the most commonly used terms include whiskey sour, bourbon sour, sour mash, and sour whiskey. Other variations include lemon sour, which is made with lemon juice instead of whisky, and the whiskey sour with egg white, which adds a frothy texture to the drink. No matter what you call it, a whisky sour is a delicious and timeless cocktail that is perfect for any occasion.