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An adjective changes how a noun or pronoun is understood. It can add sensory detail, narrow a category, express judgment, or mark a comparison.
In standard grammar, adjectives describe or modify nouns and pronouns. That modification may be visible and physical, as in blue jacket. It may be evaluative, as in careless answer. It may be relational, as in medical record. In each case, the adjective tells the reader which version of the noun matters.
Adjectives often appear before nouns, but they can also appear after linking verbs. The room is quiet uses quiet after is, but it still describes the room.
A common editing mistake is using an adjective when the sentence needs an adverb, or the reverse. Adjectives modify nouns and pronouns. Adverbs often modify verbs, adjectives, or other adverbs.
Adjective: The careful driver stopped.
Adverb: The driver stopped carefully.
| Function | Example | What changes |
|---|---|---|
| Describe quality | a brittle page | The reader imagines texture and fragility. |
| Limit identity | the northern entrance | The noun is narrowed to one entrance. |
| Signal judgment | a risky plan | The writer’s evaluation enters the sentence. |
| Show number or amount | three notebooks | The noun becomes countable and specific. |
| Compare degree | a quieter room | The noun is understood relative to another case. |
Ask whether the adjective changes the facts, the image, or the reader’s judgment. If it does none of those, the sentence may be stronger without it.
Defines adjectives as words that describe or modify nouns and pronouns.
Explains adjectives as a major word class that gives more information about nouns and pronouns.
Clarifies how adjectives and adverbs differ in sentence function.