Is Delightfulness an Adjective?

DELIGHTFUL (adjective) definition and synonyms | Macmillan Dictionary.

Is Delightfulness a word?

noun The quality of being delightful, or of affording great pleasure: as, the delightfulness of a prospect or of scenery; the delightfulness of leisure. noun The state of being delighted; great pleasure; delight.

Is delight an adjective or adverb?

You can use the adjective delighted to describe being really pleased or happy with something.