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What Is an Adjective? Rules and Examples

Updated on December 9, 2024Parts of Speech
  • An adjective is a word that describes or modifies a noun or pronoun, often providing information about the qualities or characteristics of someone or something.
  • Adjectives can describe qualities independently or in comparison to something else, and they often appear directly before the noun or pronoun they modify. Examples include words like enormous, doglike, silly, yellow, fun, and fast.
  • Adjectives have three forms: absolute (describing one thing, like messy), comparative (comparing two things, like messier), and superlative (indicating the highest degree, like messiest). Comparatives often use –er or more, while superlatives use –est or most.
  • Coordinate adjectives equally modify the same noun and are separated by commas or conjunctions (long, cold winter). Non-coordinate adjectives form a unit of meaning and are not separated (tattered woolen sweater).
  • Adjectives can also describe the quantity of nouns: many, few, millions, eleven.

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Table of contents

How to use adjectives

Adjectives modify nouns

Degrees of adjectives

Coordinate adjectives

Adjectives vs. adverbs

Nouns as adjectives and adjectives as nouns

Adjective usage advice

Adjective FAQs

How to use adjectives

Use adjectives to tell the reader what kind of something you’re talking about or how much or how many of something you’re talking about.

Please use three white flowers in the arrangement.

Three and white are modifying flowers.[/example]

Often, when adjectives are used together, you should separate them with a comma or conjunction. See “Coordinate adjectives” below for more details.

I’m looking for a small, good-tempered dog to keep as a pet.

My new dog is small and good-tempered.

Adjectives modify nouns

As you may already know, adjectives are words that modify (describe) nouns. Adjectives do not modify verbs, adverbs, or other adjectives.

Margot wore a beautiful hat to the pie-eating contest.

Furry dogs may overheat in the summertime.

My cake should have sixteen candles.

The scariest villain of all time is Darth Vader.

The adjectives are easy to spot in the sentences above because they come immediately before the nouns they modify.

However, adjectives can modify nouns without appearing before them in a sentence. Acting as a subjective complement with the help of a linking verb, a predicate adjective modifies the subject of a sentence.

A linking verb is a verb like to be, to feel, to seem, or to taste that, rather than describing an action, helps to describe a state of being or a sensory experience.

That cow sure is happy.

It smells gross in the locker room.

Driving is faster than walking.

Degrees of adjectives

Adjectives come in three forms, known as degrees: absolute, comparative, and superlative.

Absolute adjectives

Absolute adjectives describe something in its own right.

A cool guy

A messy desk

A rigid guideline

An awful situation

A mischievous cat

Garrulous squirrels

Comparative adjectives

Comparative adjectives, unsurprisingly, make a comparison between two or more things. For most one-syllable adjectives, the comparative is formed by adding the suffix –er (or just –r if the adjective ends with an e).

For two-syllable adjectives, some use –er to form the comparative, while others use the word more. In general, two-syllable adjectives ending in –er, –le, –ow, –ure, or –y can be made comparative by adding –er (in the case of –y words, replace y with –ier). For adjectives of three or more syllables, add the word more.

A cooler guy

A messier desk

A more rigid guideline

A more awful situation

A more mischievous cat

More garrulous squirrels

Superlative adjectives

Superlative adjectives indicate that something has the highest degree of the quality in question. One-syllable adjectives become superlatives by adding the suffix –est (or just –st for adjectives that already end in e).

As with the comparative, some two-syllable adjectives use –est to form the superlative, while others use the word most. Generally, two-syllable adjectives ending in –y replace –y with –iest.

Adjectives of three or more syllables add the word most. An article with a superlative adjective will almost always be the definite article (the) rather than a or an. Using a superlative inherently indicates that you are talking about a specific item or items.

The coolest guy

The messiest desk

The most rigid guideline

The most awful situation

The most mischievous cat

The most garrulous squirrels

Here’s a tip: Want to make sure you’re using adjectives correctly in your writing? Grammarly can check your spelling and save you from grammar and punctuation mistakes. It even proofreads your text, so your work is extra polished wherever you write. 

Coordinate adjectives

Coordinate adjectives should be separated by a comma or the word and. Adjectives are said to be coordinate if they modify the same noun in a sentence to the same degree.

This is going to be a long, cold winter.

Isobel’s dedicated and tireless efforts made all the difference.

Sometimes, when two adjectives appear next to each other and modify the same noun, the one closer to the noun is so closely related to the noun that they form a single semantic unit together. That unit is what is modified by the first adjective. In this case, the adjectives are not coordinate and should not be separated by a comma.

My cat, Goober, loves sleeping on this tattered woolen sweater.

No one could open the old silver locket.

In some cases, it’s pretty hard to tell whether two adjectives are coordinate or not. But there are a couple of ways you can test them. Try inserting the word and between the adjectives to see if the phrase still seems natural.

In the first sentence above, “this tattered and woolen sweater” doesn’t sound right because you aren’t talking about a sweater that is both tattered and woolen in the same way. It’s a woolen sweater inherently, and it has become tattered. Woolen sweater forms a unit of meaning that is modified by tattered.

Another way to test for coordinate adjectives is to try switching the order of the adjectives and seeing if the phrase still works. In the second sentence, you wouldn’t say, “No one could open the silver old locket.” You can’t reverse the order of the adjectives because silver locket is a unit modified by old.

Adjectives vs. adverbs

Many of us learned in school that adjectives modify nouns and adverbs modify verbs. But as we’ve seen, adjectives don’t need to be right next to nouns to modify them; they can do so after a linking verb in a sentence as predicate adjectives. This leads to a common type of mistake: using an adverb when what you want is a predicate adjective. Here’s an example you’ve probably heard before:

I feel badly about what happened.

Because feel is a verb, it may seem to call for an adverb rather than an adjective. But feel isn’t just any verb; it’s a linking verb. An adverb would describe how you perform the action of feeling—an adjective describes what you feel. “I feel badly” would mean you are bad at feeling things. If you’re feeling numb, it might make sense to say, “I feel badly.” But if you’re trying to say that you are experiencing a negative emotion, “I feel bad” is the phrase you want.

It’s easier to see this distinction with a different linking verb. Consider the difference between these two sentences:

Max smells badly.

Max smells bad.

“Max smells badly” means that Max has a weak sense of smell. “Max smells bad” means that Max stinks.

Nouns as adjectives and adjectives as nouns

One more thing you should know about adjectives is that, sometimes, a word normally used as a noun can function as an adjective, depending on its placement.

Never try to pet someone’s guide dog without asking permission first.

Guide is a noun, but in this sentence, it is used as an adjective to modify dog.

It works the other way, too: Sometimes, words that are normally adjectives shift into use as nouns. Many times, this happens with adjectives used to denote a group of people, with the addition of the:

The French are known for valuing their leisure time.

Robin Hood stole from the rich to give to the poor.

The word people has been omitted in the above examples, and the adjectives French, rich, and poor function as nouns. This kind of shift also happens with other types of adjective-noun pairs, especially when they are commonly used together:

Our English class took our final this morning.

Camille tends to focus on intangibles like communication style and a sense of camaraderie when deciding whether to accept a job offer.

In these sentences, the nouns exam and qualities have been omitted.

Adjective usage advice

It’s one thing to know how to use an adjective; it’s another to know when using one is a good idea. Good writing is precise and concise.

Sometimes, you need an adjective to convey precisely what you mean. It’s hard to describe a red sports car without the word red. But often, choosing the right noun eliminates the need to tack on an adjective. Is it a big house, or is it a mansion? A large crowd or a throng? A mixed-breed dog or a mutt? A dark night or just night?

Always aim to make every word count in your writing. If you need an adjective, use it. But if it’s not adding value, skip it.

Adjective FAQs

What is an adjective?

An adjective is a word that describes the traits, qualities, or number of a noun.

What are examples of adjectives?

Descriptive words like beautiful, smooth, and heavy are all adjectives, as are numbers (twelve eggs).

What is the difference between adjectives and adverbs?

Adjectives modify nouns, while adverbs modify verbs, adjectives, and other adverbs. For example, in the phrase very funny movie, funny is an adjective describing the noun movie, and very is an adverb describing the adjective funny.

Can adjectives modify adverbs?

Adjectives can modify only nouns. Only adverbs can modify other adverbs.

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