The abstract noun for the adjective dim is dimness.

The abstract noun for the verb to dim is the gerund, dimming.

Dimness of vision; partial loss of sight.

The phrase "quiver in dimness" conveys a sense of shivering or trembling in a low-light or dark environment. It suggests a feeling of fear, uncertainty, or vulnerability in a situation that lacks clarity or visibility.

dumbness, dimness, denseness

Her headlights were dim and made it hard to drive. Another good sentence would be, she put the lights on dim to make it feel romantic in the room.