In apposition, two noun phrases point to the same person or thing: ο Γιάννης, ο αδερφός μου names one person twice. Because both expressions occupy the same syntactic slot, they normally carry the same case. Punctuation then tells the reader whether the second expression identifies the referent or merely adds parenthetical information.
One referent, one syntactic role
The appositive can be removed without changing the grammatical frame of the surrounding clause. What remains identifies the same participant.
Ο Γιάννης, ο αδερφός μου, ήρθε νωρίς.
o Yánis, o adherfós mu, írthe norís
Yannis, my brother, came early.
Both ο Γιάννης and ο αδερφός μου are nominative subjects of ήρθε. The second phrase does not introduce another man; it renames Yannis.
Συνάντησα τον Παύλο, τον υπεύθυνο του καταστήματος.
sinándisa ton Pávlo, ton ipéfthino tu katastímatos
I met Pavlos, the manager of the shop.
Here the verb assigns accusative to its object, so both τον Παύλο and τον υπεύθυνο are accusative. English nouns show almost no case contrast, which makes it easy for an English speaker to repeat the Greek dictionary form instead of matching the first phrase.
Case matching across the paradigm
Apposition is not limited to nominative subjects. The repeated description follows the case imposed by the whole sentence.
| Role | Case | Appositive pair |
|---|---|---|
| subject | nominative | η Ελένη, η γιατρός |
| direct object | accusative | την Ελένη, τη γιατρό |
| possessor / genitive complement | genitive | της Ελένης, της γιατρού |
Η Ελένη, η γιατρός της οικογένειας, μας τηλεφώνησε.
i Eléni, i yatrós tis ikoyénias, mas tilefónise
Eleni, the family doctor, called us.
Ρώτησα την Ελένη, τη γιατρό της οικογένειας.
rótisa tin Eléni, ti yatró tis ikoyénias
I asked Eleni, the family doctor.
Το γραφείο της Ελένης, της γιατρού της οικογένειας, είναι στον δεύτερο όροφο.
to ghrafío tis Elénis, tis yatrú tis ikoyénias, íne ston dhéftero órofo
Eleni's office—the family doctor's—is on the second floor.
The appositive copies the case of Ελένη, not the case of some nearby noun. Its own dependents then take whatever case their internal structure requires: in της γιατρού της οικογένειας, the first genitive matches Eleni, while the second expresses “of the family.”
The dedicated case in apposition page gives the complete declensional treatment. The syntax question here is why the matching occurs: both phrases fill one role in the larger clause.
Loose apposition: extra information in commas
Loose or non-restrictive apposition assumes that the first phrase already identifies the referent. The appositive adds information and is set off by commas, like a parenthetical comment.
Η κυρία Αντωνίου, η λογίστριά μας, λείπει σήμερα.
i kiría Andoníu, i loghístriá mas, lípi símera
Ms Antoniou, our accountant, is away today.
Ο Νίκος μίλησε με τη Μαρίνα, τη νέα του συνεργάτιδα, μετά τη σύσκεψη.
o Níkos mílise me ti Marína, ti néa tu sinerghátidha, metá ti sískepsi
Nikos spoke with Marina, his new colleague, after the meeting.
When the appositive falls in the middle, Greek writing uses a comma on both sides. At the end, the sentence-final punctuation closes it. In speech, small pauses and a separate intonation contour perform the same job.
Close apposition: identifying which person
Close or restrictive apposition helps identify the intended referent and normally has no commas. Everyday Greek often repeats the article before the identifying name.
Ο ξάδερφός μου ο Μιχάλης μένει στην Πάτρα.
o ksádherfós mu o Michális méni stin Pátra
My cousin Michalis lives in Patras.
Μίλησα με τον ξάδερφό μου τον Μιχάλη χθες.
mílisa me ton ksádherfó mu ton Micháli chthes
I spoke with my cousin Michalis yesterday.
Both parts again match: nominative ο ξάδερφος … ο Μιχάλης, accusative τον ξάδερφο … τον Μιχάλη. Removing the commas is not merely cosmetic; it changes the information status from “extra description” to “which cousin?”
Titles and proper names
A title plus a personal name forms a close unit. Decline every element that has a Greek case form.
Μίλησα με τον καθηγητή Παπαδόπουλο μετά το μάθημα.
mílisa me ton kathiyití Papadhópulo metá to máthima
I spoke with Professor Papadopoulos after class.
Η ανακοίνωση του καθηγητή Παπαδόπουλου στάλθηκε το πρωί.
i anakínosi tu kathiyití Papadhópulu stálthike to proí
Professor Papadopoulos's announcement was sent in the morning.
Greek place names do not all use one pattern. Geographic labels such as ο ποταμός Νείλος and το όρος Όλυμπος behave appositionally, so both words change case.
Το πλοίο διέσχισε τον ποταμό Νείλο μέσα σε έξι μέρες.
to plío dhiéschise ton potamó Nílo mésa se éksi méres
The boat traveled along the Nile River in six days.
By contrast, expressions such as η πόλη της Αθήνας and η οδός Ερμού contain a genitive name. These are conventional name structures, not same-case apposition. Their distribution must be learned with the geographic label; articles in titles and geography maps the patterns.
Apposition versus genitive modification
The decisive question is whether the second noun renames the first or represents a different possessor or associated entity.
Ο αδερφός μου ο Νίκος θα μας περιμένει έξω.
o adherfós mu o Níkos tha mas periméni ékso
My brother Nikos will wait for us outside.
Ο αδερφός του Νίκου θα μας περιμένει έξω.
o adherfós tu Níku tha mas periméni ékso
Nikos's brother will wait for us outside.
In the first, brother and Nikos are one person, both nominative. In the second, του Νίκου denotes another person related to the brother, so it is genitive modification. This semantic test explains the morphology better than memorizing adjacent endings.
Common Mistakes
1. Mixing nominative and accusative forms inside a loose appositive.
❌ Κάλεσαν τον Πέτρο, τον υπεύθυνος της ομάδας.
Incorrect—the accusative article τον requires accusative υπεύθυνο.
✅ Κάλεσαν τον Πέτρο, τον υπεύθυνο της ομάδας.
kálesan ton Pétro, ton ipéfthino tis omádhas
They invited Petros, the team leader.
2. Opening but not closing a parenthetical appositive.
❌ Η Άννα, η νέα υπεύθυνη ξεκίνησε σήμερα.
Incorrect punctuation—the parenthetical appositive needs a closing comma.
✅ Η Άννα, η νέα υπεύθυνη, ξεκίνησε σήμερα.
i Ána, i néa ipéfthini, ksekínise símera
Anna, the new manager, started today.
3. Leaving an appositional river name in nominative after an accusative label.
❌ Διασχίσαμε τον ποταμό Νείλος με μικρό σκάφος.
Incorrect—the geographic apposition matches accusative ποταμό: Νείλο.
✅ Διασχίσαμε τον ποταμό Νείλο με μικρό σκάφος.
dhiaschísame ton potamó Nílo me mikró skáfos
We traveled along the Nile River in a small boat.
Key Takeaways
- Apposition places two expressions in one syntactic role and normally gives them the same case.
- Loose apposition adds parenthetical information and takes commas; close apposition identifies and takes no commas.
- Titles, surnames, and true geographic appositives decline with their surrounding phrase.
- A genitive modifier denotes a different associated referent; an appositive renames the same referent.
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Start learning Greek →Related Topics
- Case in AppositionB2 — When one noun renames another it copies its case — Είδα τον Γιάννη, τον δάσκαλο — and when it merely modifies it, the case changes to genitive; plus the apposition rules for titles, place names, ως and σαν, and pronouns like σ' εμάς τους δασκάλους.
- Articles in Titles and GeographyB1 — How the definite article behaves with titles, place names and works — ο κύριος Παπαδόπουλος with both words declining, the genitive-apposition street (η οδός Ερμού, η πλατεία Συντάγματος), seas and mountains and rivers with their fixed genders, the plural-only place names (τα Ιωάννινα, τα Χανιά, οι Δελφοί), and book and film titles that keep their own article.
- Genitive: PossessionA1 — Greek has no apostrophe-s and no word for 'of' — possession is built head-first, with the possessed thing coming before the genitive possessor (το σπίτι του Γιάννη), and everyday 'my/your/his' handled by the unstressed clitics μου, σου, του that trigger a second accent on the noun.
- Subordinate Clauses OverviewA2 — Recognize Greek complement, adverbial, and relative clauses by what they attach to and what job they perform in a larger sentence.