What is unsweetened, non-carbonated lemonade usually called?

What is unsweetened, non-carbonated lemonade usually called? It is usually called lemon water.

The name distinguishes a simple mixture of lemon juice and water from conventional lemonade, which normally includes a sweetener such as sugar, honey, or syrup. It is generally served still rather than carbonated, and may be made with cold or warm water.

Lemon water is not a single standardized recipe. Some people squeeze fresh lemon into a glass, while others add slices, mint, or ginger. The amount of lemon varies with taste, so the drink can range from faintly flavored water to something sharply acidic.

A common mix-up is calling every lemon-flavored drink lemonade. In North America and South Asia, lemonade usually means sweetened, non-carbonated lemon juice and water. In Britain, Australia, and New Zealand, “lemonade” often means a clear, carbonated soft drink; “still” or “cloudy lemonade” may be used for the non-fizzy kind.