Appositive phrase
An appositive phrase is a noun phrase set beside another noun to rename or expand it, as in 'her brother, a locksmith with steady hands', adding identification or detail without a verb of its own.
Her brother, a locksmith with steady hands, opened it in nine seconds. The phrase renames her brother. It has no verb and no conjunction; it simply sits alongside and adds. The appositive and the noun it renames are the same person, which is the test: you could swap one for the other and the sentence would still be true.
Appositive phrase examples
- In the middle: Dr Vance, the only one who had read the file, said nothing.
- At the end: She called the one person who would come, her brother.
- At the start: A quiet man by nature, Sanchez said nothing.
- Single word, no commas: My sister Ruth is a pilot.
The appositive comma rule
The rule follows from one question: does the sentence still tell us who is meant without the appositive?
- My sister Ruth is a pilot. No commas, because the name is doing the identifying. You have more than one sister.
- My sister, Ruth, is a pilot. Commas, because the identifying is already done. You have one sister, and the name is extra.
- The novelist Charles Dickens wrote it. No commas: the novelist alone does not say which one.
An appositive that identifies is a bound modifier; one that adds is a free modifier. The same distinction governs the relative clause, and it is one of the few places where punctuation changes the facts rather than the rhythm.
In the middle of a sentence, an appositive that takes commas needs two of them. Her brother, a locksmith opened it is missing the one after locksmith.
Appositive vs absolute phrase
An appositive renames a noun that is already in the sentence. An absolute phrase brings in a new noun: Her brother opened it, his hands steady. His hands is not her brother, so that is an absolute, not an appositive.
Why fiction writers use them
Appositives are how prose smuggles in exposition without stopping for it. Compare He handed the envelope to Dr Vance. Dr Vance had signed the original report. with He handed the envelope to Dr Vance, the man who had signed the original report. Same information, one sentence, no pause in the scene.
They are also a standard rung in a cumulative sentence: name the thing, then rename it more precisely, then rename it again.
Frequently asked questions
What is an appositive phrase?
It is a noun phrase placed next to another noun that renames or describes it, such as 'a locksmith with steady hands' in 'Her brother, a locksmith with steady hands, opened it.' The appositive and the noun it renames refer to the same person or thing.
What is the comma rule for appositives?
Use commas when the appositive adds extra information about a noun that is already identified. Leave them out when the appositive is what tells the reader which one you mean, as in 'the novelist Charles Dickens'.
What is the difference between an appositive and an appositive phrase?
An appositive can be a single word, like 'Ruth' in 'my sister Ruth'. An appositive phrase is the noun plus its modifiers, like 'a locksmith with steady hands'.
Can an appositive phrase come before the noun?
Yes. 'A locksmith with steady hands, her brother opened it in nine seconds' puts the appositive first. It works, but it delays the subject, so use it when you want the description to land before the name.