Answer:
A word or phrase naming an attribute, added to or grammatically related to a noun to modify or describe it.
Step-by-step explanation:
Examples are: beautiful, pretty, heavy.
Any descriptive words are adjectives.
Example Sentence: That is a thick noodle.
Thick is the adjective because it is adding description to the noun, which is noodle.
Hope this helps! Feel free to ask questions!