What is the noun form of dark?

The noun form of "dark" depends on the specific meaning you want to convey. Here are some options:

* Darkness: This is the most common and general noun form, referring to the absence of light.

* Dark: This can be used as a noun, especially in the context of a specific type of darkness. For example, "The dark of night" or "the dark of the woods."

* Shadow: This refers to a dark area caused by something blocking light.

* Gloom: This suggests a feeling of sadness or depression.

* Obscurity: This refers to a lack of clarity or knowledge.

The best noun form to use will depend on the specific context of your sentence.