Primitive and Ungraded

Primitive adjective - Belonging to or characteristic of an early level of skill or development.

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

Nearby Word: primitively

Ungraded adjective - Not arranged in order hierarchically.

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