What is an adjective?

An adjective is a word that describes or modifies a noun, providing more information about it. This can include details about the noun’s size, shape, color, amount, or other qualities. For example, in the phrase "the tall building," "tall" is the adjective that gives us more context about the building, which is the noun. Adjectives enrich our understanding of the nouns they describe, enabling clearer and more vivid communication.

The other options represent different types of words: the first describes adverbs, the second pertains to antonyms or words that counter each other, and the last relates to conjunctions, which are used to connect clauses or sentences. Each of these plays a distinct role in language, but they do not fulfill the function of describing or modifying nouns as adjectives do.