What is the noun for bored?

There isn't a single perfect noun for "bored." However, depending on the context, you could use:

* Boredom: This is the most direct and common noun.

* Ennui: This word is more formal and suggests a deeper, more profound boredom.

* Tedium: This word implies a feeling of monotony and lack of stimulation.

* Dullness: This word suggests a lack of excitement or interest.

The best word to use will depend on the specific situation and the level of formality you want to convey.