Adjectival (adjective)

1. Relating to or having the nature of an adjective.
2. Describing a word, phrase, or clause that functions as an adjective.

Origin:

Derived from the word 'adjective', meaning a word that describes a noun or pronoun.

Examples:

1. The adjective form of the noun is used to modify the noun.
2. An adjectival phrase modifies a noun in a sentence.
3. Adjectival clauses are used to describe or qualify a noun.
4. The adjective form of the verb is called a participle.
5. An adjectival adjective modifies a noun to express a quality or attribute.