An adjective is often defined as a word which describes or gives more information about a noun or pronoun .
Adjectives describe nouns in terms of such qualities as size, color, number, and kind.
In the sentence The lazy dog sat on the rug , the word lazy is an adjective which gives more information about the noun dog . We can add more adjectives to describe the dog as well as in the sentence The lazy, old, brown dog sat on the rug. The lazy, old, brown dog sat on the beautiful, expensive, new rug. The adjectives do not change the basic meaning or structure of the sentence, but they do give a lot more information about the dog and the rug . Usually an adjective comes before the noun that it describes, as in tall man .