An appositive is a noun phrase placed beside another to rename or identify it: "Ion, my neighbour, called"; "the capital of the country, Bucharest." The two phrases refer to the same thing, and the second re-describes the first. English handles apposition with nothing but commas — the appositive never changes form. Romanian adds one demand that catches every English speaker: because Romanian marks case, the appositive must take the same case as the noun it renames. When the head noun is in the dative, the appositive goes into the dative too — I-am scris lui Ion, *colegului meu ("I wrote to Ion, my colleague"), with the dative ending on *coleg. Expanding a noun phrase in Romanian therefore drags case agreement along with it, and that is the heart of this page. For how appositives fit into the rhythm of a long sentence, see constructing longer sentences.
What an appositive is
An appositive sits next to a noun, usually set off by commas, and renames it. The head noun and the appositive are the same referent seen twice — once by name, once by description.
Ion, vecinul meu, a sunat să întrebe de tine.
Ion, my neighbour, called to ask about you.
Capitala țării, București, are peste două milioane de locuitori.
The country's capital, Bucharest, has over two million inhabitants.
Sora mea, Ana, lucrează la spital.
My sister, Ana, works at the hospital.
In each, the commas mark the appositive as non-restrictive — extra, identifying information you could lift out without changing which person or thing is meant (you already know which neighbour, which capital, which sister). Hold that idea; the comma is doing real work, and we return to it below.
The case rule: the appositive copies the head's case
This is the rule that has no English equivalent. When the head noun stands in a non-nominative case, its appositive must take that same case. The clearest place to see it is the dative (the case of the recipient, "to/for X") and the genitive (the case of possession, "of X").
| Case of head | Head + appositive | English |
|---|---|---|
| nominative | Ion, vecinul meu | Ion, my neighbour (subject) |
| dative | lui Ion, vecinului meu | to Ion, my neighbour |
| genitive | (casa) lui Ion, a vecinului meu | Ion's house, my neighbour's |
I-am scris lui Ion, colegului meu de la birou.
I wrote to Ion, my colleague from the office. (dative on both: 'lui Ion' and 'colegului meu')
Le-am mulțumit organizatorilor, oamenilor care au făcut totul posibil.
I thanked the organizers, the people who made everything possible. (dative plural on both: 'organizatorilor', 'oamenilor')
Look closely at the first: the proper name marks its dative with the particle lui (lui Ion), while the common noun marks it with the genitive-dative ending (coleg → colegului). Two different mechanisms for the dative, but the same case — and the appositive must show it. Leave coleg in the nominative (colegul meu) and the sentence is wrong, because the appositive would no longer agree with the dative lui Ion. (For the full case mechanics, see the genitive and the case summary table.)
Cartea lui Ion, prietenului meu cel mai bun, a fost premiată.
The book of Ion, my best friend, was awarded a prize. (genitive-dative form 'prietenului' agrees with 'lui Ion')
Expanding a noun phrase: stacking modifiers
Apposition is one way to grow a noun phrase, but you can stack several kinds of modifier on a single head: a relative clause (care...), a genitive ("of X"), a prepositional phrase (de la, despre, cu), and an appositive. The trick is to keep each modifier's own grammar straight while they all describe the one head.
Profesorul nostru de istorie, un om de o răbdare rară, ne-a iertat întârzierea.
Our history teacher, a man of rare patience, forgave us for being late. (PP modifier 'de istorie' + appositive 'un om de o răbdare rară')
Vecina de la trei, doamna care are doi câini, mi-a lăsat un bilet.
The neighbour from number three, the lady who has two dogs, left me a note. (PP + appositive containing a relative clause)
Notice the appositive can itself contain a relative clause (doamna care are doi câini). You're building a small tree: one head, several branches, each well-formed in its own right. End-weight applies here as everywhere — a long appositive sits comfortably, but if it grows very heavy, consider whether the sentence reads better with it postponed (see extraposition and heavy constituents).
Restrictive vs non-restrictive: the comma decides
Romanian, like English, distinguishes restrictive apposition (no commas — the appositive narrows down which one) from non-restrictive (commas — the appositive merely adds extra information about an already-identified referent). The comma is not decorative; it changes the meaning.
Poetul Eminescu a murit în 1889.
The poet Eminescu died in 1889. (restrictive, no commas — 'Eminescu' tells us which poet)
Mihai Eminescu, marele poet romantic, a murit în 1889.
Mihai Eminescu, the great Romantic poet, died in 1889. (non-restrictive, commas — extra description of someone already named)
The first is restrictive: Eminescu identifies which poet, so no commas (the same way English writes "the poet Eminescu," not "the poet, Eminescu"). The second is non-restrictive: the person is already fully named, and marele poet romantic just adds colour, so it is fenced off with commas. Test it by deletion: if removing the phrase still leaves it clear which referent you mean, use commas; if removal makes the head vague, drop the commas.
Common Mistakes
Leaving the appositive in the nominative when the head is in the dative — the signature English-speaker error:
❌ I-am scris lui Ion, colegul meu.
Wrong case — the appositive must match the dative 'lui Ion': I-am scris lui Ion, colegului meu.
✅ I-am scris lui Ion, colegului meu.
I wrote to Ion, my colleague.
Failing to put the appositive into the genitive when the head is possessive:
❌ Cartea lui Ion, prietenul meu, e excelentă. [for 'Ion's book, my friend's']
If the appositive renames the genitive 'lui Ion', it must be genitive too: Cartea lui Ion, prietenului meu, e excelentă.
✅ Cartea lui Ion, prietenului meu, e excelentă.
Ion's book — my friend's — is excellent.
Adding commas to a restrictive appositive that identifies which one:
❌ Sora mea, Ana, este medic, iar cealaltă, Maria, e avocată. [when distinguishing two sisters]
If 'Ana' is needed to say WHICH sister, it's restrictive — no commas: Sora mea Ana e medic, iar sora mea Maria e avocată.
✅ Poetul Eminescu a murit în 1889.
The poet Eminescu died in 1889. (restrictive — no commas)
Omitting commas from a clearly non-restrictive appositive:
❌ București capitala României are metrou.
The appositive is extra information, so fence it with commas: București, capitala României, are metrou.
✅ București, capitala României, are metrou.
Bucharest, the capital of Romania, has a metro.
Dropping the genitive linker a/al/ai/ale when the appositive heads a separate genitive phrase:
❌ casa lui Ion, vecinul meu [for 'the house of Ion, of my neighbour']
A possessive appositive standing on its own needs the genitive article and case: casa lui Ion, a vecinului meu.
✅ casa lui Ion, a vecinului meu
the house of Ion, my neighbour's
Key Takeaways
- An appositive renames an adjacent noun (Ion, vecinul meu); the two share one referent.
- The rule with no English parallel: the appositive copies the case of the head — lui Ion, vecinul*ui meu (dative), cartea lui Ion, prietenul**ui meu* (genitive).
- Proper names mark dative/genitive with lui; common nouns mark it with the -ului/-ei/-lor ending — different mechanisms, same case, both required on head and appositive.
- Expand a noun phrase by stacking relative clauses, genitives, prepositional phrases, and appositives — each well-formed in its own right.
- Commas decide restrictive (no commas — narrows which one, poetul Eminescu) vs non-restrictive (commas — extra info, Ion, vecinul meu); use the deletion test.
Now practice Romanian
Reading grammar gets you part of the way. The exercises are where it sticks — free, no signup needed.
Start learning Romanian→Related Topics
- Constructing Longer SentencesB2 — Practical assembly of long Romanian sentences: anchor one main clause and hang care/că/când-clauses and gerund adjuncts off it, push heavy material to the end, and keep clitics and agreement straight across every clause. Covers chaining coordination with subordination, stacking relative clauses, the compact gerund adjunct (Ajungând acasă, am sunat-o) that replaces an English 'when/after' clause, end-weight, punctuation, and how to avoid comma-splice run-ons.
- The Genitive (possession, 'of')B1 — How Romanian expresses possession and the 'of'-relation by inflecting the possessor — masculine -lui, feminine -ei/-ii — with no preposition, plus proper names with lui and the genitival article al/a/ai/ale.
- Case System: Master ReferenceB2 — A consolidating reference with full declension tables for a masculine (băiat), feminine (fată), and neuter (tren) noun across every case — Nominative-Accusative, Genitive-Dative, Vocative — in both indefinite and definite forms, singular and plural, showing that case in Romanian is overwhelmingly carried by the article, not the stem.
- Complex Sentences (subordination)B1 — How to hang a subordinate clause off a main one with că, să, dacă, care, când, pentru că, and ca să — building them step by step, and making the two practical decisions: which connector, and which mood (că + indicative for facts, să + conjunctiv for wishes and goals). The big habit to acquire: Romanian uses a finite să-clause where English uses 'to + verb'.
- Extraposition and Heavy ConstituentsC1 — Romanian obeys end-weight: a long or clausal subject is extraposed to the end of the sentence, which opens with the predicate (E adevărat că a plecat; Mă bucură că ai reușit). Heavy relative-modified noun phrases are postposed over lighter material, and a clausal subject that must stay up front is nominalized with faptul că. Forcing a long că-clause into preverbal position (Că a plecat e adevărat) sounds wrong — Romanian restructures it.