An adjective phrase is a word or group of words built around an adjective. It may contain words that strengthen, limit, compare, or complete the adjective’s meaning.
Consider:
The hikers were extremely proud of their achievement.
The complete adjective phrase is extremely proud of their achievement. Its head adjective is proud. The word extremely strengthens the description, while of their achievement tells us what the hikers were proud of.
An adjective phrase can also consist of a single adjective, as in The hallway remained silent. The important feature is its head, not the number of words it contains.
Adjective phrases appear in different positions and perform different functions. The challenge with longer ones is recognizing which words belong to the adjective phrase and which belong to the wider sentence.
Structure of an Adjective Phrase
An adjective phrase is organized around its head adjective. Modifiers may appear before or after it, and some adjectives take complements that complete or specify their meaning.
A common pattern is:
Premodifier + head adjective + complement or postmodifier
Not every adjective phrase contains all these elements.
| Adjective Phrase | Head Adjective | Other Elements |
|---|---|---|
| remarkably patient | patient | Degree modifier |
| slightly uncomfortable | uncomfortable | Degree modifier |
| proud of her achievement | proud | Prepositional complement |
| ready to begin | ready | Infinitival complement |
| certain that the answer was correct | certain | Content-clause complement |
| much more expensive than expected | expensive | Degree and comparative elements |
Modifiers Before the Adjective
Degree words such as very, quite, slightly, extremely, and remarkably commonly appear before adjectives.
Compare:
The explanation was fairly clear.
The explanation was surprisingly clear.
Both phrases are headed by clear. The first suggests a moderate degree of clarity. The second suggests that the clarity was unexpected.
Comparative adjectives also take degree modifiers:
- much safer
- slightly less expensive
- far more demanding
- considerably better prepared
The choice of modifier matters. Completely impossible is natural in standard English, while very impossible is generally not.
Complements After the Adjective
Some adjectives are followed by expressions that complete or specify their meaning.
| Adjective Phrase | Complement | Example Sentence |
|---|---|---|
| familiar with the neighborhood | with the neighborhood | The new delivery driver was familiar with the neighborhood. |
| reluctant to apologize | to apologize | Oliver seemed reluctant to apologize. |
| certain that the keys were missing | that the keys were missing | Her parents were certain that the keys were missing. |
| more reliable than the old model | than the old model | The replacement pump was more reliable than the old model. |
In reluctant to apologize, the infinitival clause tells us what Oliver was reluctant to do. In certain that the keys were missing, the content clause expresses what the parents believed to be true.
Some adjectives also occur with particular prepositions, such as interested in, responsible for, and similar to. Choosing another preposition may produce an unnatural expression or change the intended meaning.
Adjective Phrases With Enough
When enough modifies an adjective, it normally follows that adjective.
The wooden shelf was strong enough to hold the ceramic pots.
The head adjective is strong. The word enough expresses a sufficient degree of strength, and to hold the ceramic pots specifies what the shelf is strong enough to do.
Compare:
Correct:
The shelf is strong enough.
Incorrect:
The shelf is enough strong.
The word order differs from expressions such as enough space or enough time, where enough appears before a noun.
Coordinated Adjective Phrases
Two adjective phrases can be joined by and, but, or or.
The children were tired but excited about the trip.
Here, tired and excited about the trip are coordinated adjective phrases. The complement about the trip belongs to excited, not necessarily to tired.
Another example:
The instructions were clear and surprisingly easy to follow.
Clear is the first adjective phrase. The second, surprisingly easy to follow, contains a modifier and an infinitival complement.
The coordinated phrases work together, even though their internal structures differ.
Functions and Positions of Adjective Phrases
Adjective phrases can describe nouns directly or serve as complements within a clause.
| Position or Function | Example | Adjective Phrase |
|---|---|---|
| Attributive, before a noun | We crossed an unusually narrow footbridge. | unusually narrow |
| Subject complement | The soup tasted far too salty. | far too salty |
| Object complement | The announcement left everyone visibly upset. | visibly upset |
| Postpositive, after a noun | The passengers eager to board gathered near the gate. | eager to board |
| After an indefinite pronoun | We discovered something particularly unusual. | particularly unusual |
Before a Noun and After a Linking Verb
An attributive adjective phrase appears before the noun it describes.
Emma purchased a beautifully restored writing desk.
Beautifully restored describes the desk. The adjective restored is its head, and beautifully modifies it.
The complete noun phrase is a beautifully restored writing desk. The noun desk does not belong to the adjective phrase itself.
After a linking verb, an adjective phrase can function as a subject complement.
The proposal seemed unlikely to succeed.
The adjective phrase describes the proposal. Its head is unlikely, and to succeed completes its meaning.
As an Object Complement
An adjective phrase can describe the direct object of a verb.
The unexpected news made the neighbors deeply uneasy.
Deeply uneasy describes the neighbors, which is the direct object of made.
Compare:
The neighbors seemed deeply uneasy.
The same adjective phrase now functions as a subject complement after seemed.
The difference is its relationship to the subject or object, not its internal structure.
After a Noun or Pronoun
Some adjective phrases naturally follow the noun they describe, particularly when they contain complements.
Compare:
The eager applicants arrived early.
The applicants eager to begin training arrived early.
The single adjective eager appears naturally before applicants.
With the infinitival complement to begin training, the complete adjective phrase naturally follows the noun.
Placing the entire phrase before the noun would be unnatural:
Incorrect:
The eager to begin training applicants arrived early.
Adjective phrases also commonly follow indefinite pronouns.
We discovered something particularly unusual.
Here, particularly unusual modifies something.
How to Identify the Complete Adjective Phrase
Finding an adjective is relatively straightforward. The difficulty arises when other phrases or clauses appear nearby.
A following prepositional phrase may belong inside the adjective phrase, or it may add separate information about the situation.
When a Following Phrase Belongs to the Adjective
Consider:
The technician was fully aware of the problem.
The head adjective is aware. The word fully modifies it, while of the problem identifies what the technician knew about.
Now consider a longer sentence:
The technician was fully aware of the problems caused by the faulty wiring.
The adjective phrase contains a prepositional complement with its own internal structure.
| Word Group | Role |
|---|---|
| fully | Modifier of aware |
| aware | Head adjective |
| of the problems caused by the faulty wiring | Prepositional complement |
| the problems caused by the faulty wiring | Noun phrase inside the complement |
| caused by the faulty wiring | Participial modifier describing problems |
When a Following Phrase Is Separate
Compare:
During the inspection, the technician was fully aware of the problem.
The introductory phrase during the inspection tells us when the technician was aware of the problem.
It provides time information about the situation rather than specifying what the technician was aware of.
The adjective phrase remains fully aware of the problem.
A useful way to identify its boundaries is to find the head adjective, recognize the modifiers and complements connected to it, and distinguish these from information about the wider clause.
Adjective Phrases vs. Other Descriptive Structures
An expression may describe a noun without being structurally an adjective phrase.
| Sentence | Highlighted Expression | Structure |
|---|---|---|
| The driver was extremely nervous. | extremely nervous | Adjective phrase |
| The driver with the red umbrella stepped outside. | with the red umbrella | Prepositional phrase |
| The driver, waiting beside the bus, checked her phone. | waiting beside the bus | Nonfinite participial clause |
| The driver who knew the route offered to help. | who knew the route | Relative clause |
The first expression is headed by the adjective nervous. The others have different grammatical structures, even though they describe people or add descriptive information.
Some school grammar materials use the broader label adjectival phrase for expressions functioning descriptively. This article uses adjective phrase to mean a phrase headed by an adjective.
Participial Adjectives vs. Verb Forms
Words ending in -ing or -ed do not always have the same grammatical function.
Compare:
The visitors were extremely disappointed.
The visitors were waiting outside the museum.
In the first sentence, disappointed describes the visitors’ emotional state. It functions as an adjective, modified by extremely.
In the second, were waiting is a progressive verb construction describing an ongoing action. Waiting is part of the verb phrase, not the head of an adjective phrase.
The ending of a word alone is not enough to determine its function.
Adjective Phrase vs. Adjective Clause
Compare:
The hikers eager to reach the summit started before dawn.
The hikers who were eager to reach the summit started before dawn.
In the first sentence, eager to reach the summit is an adjective phrase headed by eager. Its infinitival complement is part of the adjective phrase.
In the second, who were eager to reach the summit is a relative clause modifying hikers. Within that clause, eager to reach the summit is still an adjective phrase.
An adjective phrase may also contain a finite clause complement.
Nadia was confident that the repairs would be finished on time.
The clause that the repairs would be finished on time completes the meaning of confident. The larger expression remains adjective-headed.
For a broader explanation of how these structures differ, see phrase vs. clause.
When Adjective Position Changes Meaning
Some adjectives have different meanings depending on whether they appear before a noun or after a linking verb.
Compare:
The late director had established the theater’s first youth program.
The director was late for the rehearsal.
In the first sentence, late indicates that the director has died. In the second, it means the director did not arrive at the expected time.
Another example:
The committee discussed a certain proposal.
The committee was certain about its decision.
Before proposal, certain can mean particular or specific without identifying which proposal.
After was, it expresses confidence.
The adjective’s position helps establish which meaning is intended.
Practice: Identify Adjective Phrases
These exercises test adjective phrase boundaries, complements, coordination, and the difference between adjective phrases and other grammatical structures.
1. Identify the Complete Adjective Phrase
The young musician seemed genuinely grateful for the unexpected opportunity.
Find the complete adjective phrase and its head.
2. Identify Coordinated Adjective Phrases
The hikers were nervous but confident about the route ahead.
Identify both coordinated adjective phrases. Which adjective has a complement?
3. Find the Adjective Phrase Boundary
During the final inspection, the mechanic was completely satisfied with the repair.
Identify the adjective phrase and explain why the introductory time expression is separate.
4. Adjective Phrase or Verb Construction?
Compare:
The visitors were extremely disappointed.
The visitors were waiting outside the museum.
Which sentence contains an adjective phrase describing a state, and which contains a progressive verb construction?
5. Why Does the Adjective Phrase Follow the Noun?
The neighbors interested in joining the gardening club attended the meeting.
Identify the adjective phrase and explain its position.
Answers and Explanations
1. Genuinely grateful for the unexpected opportunity
The complete adjective phrase is genuinely grateful for the unexpected opportunity.
Its head is grateful. Genuinely modifies the adjective, while for the unexpected opportunity identifies what the musician is grateful for.
2. Nervous; confident about the route ahead
The coordinated adjective phrases are nervous and confident about the route ahead.
The second adjective has the complement about the route ahead. The first stands alone.
3. Completely satisfied with the repair
The adjective phrase is completely satisfied with the repair.
Completely modifies satisfied, while with the repair specifies what the mechanic is satisfied with.
During the final inspection provides separate time information about the situation.
4. Extremely disappointed; were waiting
In the first sentence, extremely disappointed is an adjective phrase headed by disappointed, describing the visitors’ state.
In the second, were waiting is a progressive verb construction.
5. Interested in joining the gardening club
The adjective phrase interested in joining the gardening club modifies neighbors.
It follows the noun because the complete phrase includes the complement in joining the gardening club. A shorter adjective phrase could appear before the noun, but the full expression naturally follows it.
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