Impure and Ungraded

Impure adjective - Containing foreign or lower-grade substances.

Ungraded and impure are semantically related In some cases you can use "Ungraded" instead an adjective "Impure".

Nearby Words: impurity, impurely

Ungraded adjective - Not arranged in order hierarchically.

Impure and ungraded are semantically related in prepared topic. Sometimes you can use "Impure" instead an adjective "Ungraded", if it concerns topics such as crude, unrefined.