Esperanto does not need a separate form corresponding to English “mine,” “yours,” or “theirs.” When the noun is clear from context, the ordinary possessive A-word can stand without it: mia libro → mia, viaj ŝuoj → viaj, iliajn biletojn → iliajn. The possessive keeps the number and case endings that the omitted noun would require.
This is noun ellipsis, not a conversion into an O-word. The visible -a remains because the possessive still describes an understood noun.
The same recoverability principle applies more broadly on the Noun Ellipsis page.
The noun can be left understood
Via pano estas pli freŝa ol mia.
Your bread is fresher than mine.
This Fundamental example can be expanded as via pano ... ol mia pano. Repeating pano adds no useful information, so Esperanto leaves it understood.
Mia taso estas blua, kaj via estas verda.
My cup is blue, and yours is green.
Ŝiaj proponoj estis detalaj, sed liaj estis pli praktikaj.
Her proposals were detailed, but his were more practical.
Final via is singular because the understood noun is taso. Liaj is plural because it stands for liaj proponoj. The possessor's number is irrelevant to this agreement: liaj means several things belonging to one male person.
After esti: identifying the owner
A standalone possessive often follows esti to identify who something belongs to. It is a predicate A-word, so it agrees in number with the subject but does not take accusative -n.
Ĉu ĉi tiu ombrelo estas via?
Is this umbrella yours?
Tiuj libroj estas niaj, sed la revuoj estas iliaj.
Those books are ours, but the magazines are theirs.
— Kies estas la ruĝa jako? — Ĝi estas mia.
— Whose is the red jacket? — It is mine.
English changes my to mine and our to ours. Esperanto simply omits the recoverable noun: mia [jako], niaj [libroj]. Do not add -o or invent another pronoun.
Object forms keep accusative agreement
When the nounless possessive fills a direct-object role, it takes -n. If the understood noun is also plural, use -jn.
Mi ne trovas mian ŝargilon; ĉu mi povas uzi vian?
I cannot find my charger; may I use yours?
Ŝi prenis siajn dokumentojn, kaj mi prenis miajn.
She took her documents, and I took mine.
Ni jam kontrolis iliajn biletojn; nun ni kontrolu niajn.
We have already checked their tickets; now let us check ours.
In vian, the understood singular noun ŝargilon is the object of uzi. In miajn and niajn, the omitted nouns are plural direct objects. The endings are not decoration: they preserve information that the absent noun would otherwise show.
After a preposition, ordinary prepositional rules apply and no accusative is added merely because English uses “mine” or “theirs.”
Mi venis kun miaj kolegoj, kaj ŝi venis kun siaj.
I came with my colleagues, and she came with hers.
Here siaj is plural but not accusative because it follows kun.
Mia and la mia: indefiniteness and definiteness
With a following noun, a possessive is itself a determiner: mia libro, never neutral la mia libro. When the noun is omitted, however, the possessive is no longer functioning as a determiner. Esperanto can then add la to mark a particular, contextually identified item.
| Form | Typical interpretation | Expanded idea |
|---|---|---|
| mia | one belonging to me / mine | unu el miaj |
| la mia | the known one belonging to me | la konata afero mia |
Tiu ĉi libro estas mia.
This book is mine—one of my books.
Via ekzemplero estas sur la tablo; la mia estas en mia sako.
Your copy is on the table; mine—the specific copy known in the conversation—is in my bag.
This is a real distinction, but it is not mechanically obligatory. The Fundamento uses bare mia with a clearly understood definite noun, and PMEG explicitly recognizes both mia and la mia. Use la when it helps single out a known item; omit it freely when comparison or context already makes the referent clear.
Ĉu vi prenis mian mantelon anstataŭ la vian?
Did you take my coat instead of yours?
La vian points to the addressee's particular known coat. Bare vian would also be possible if the contrast alone made the reference sufficiently clear.
The -n in la vian marks the understood coat as the alternative direct object of prenis. This is a special clarifying use in which anstataŭ can cooperate with object marking; ordinary prepositions such as kun and al still take mia/miaj, not mian/miajn, merely because a possessive follows them.
Plural forms and “one's people”
The plural la miaj, la viaj, la liaj, and so on can refer to an understood plural set. The set may be objects just mentioned or, by established extension, a person's family, friends, supporters, or companions.
Viaj gastoj jam alvenis, sed du el la miaj ankoraŭ estas survoje.
Your guests have already arrived, but two of mine are still on the way.
Without prior mention, la miaj meaning “my people” can sound elevated or context-dependent (literary). In neutral international prose, name the group when precision matters: miaj familianoj, miaj kolegoj, miaj samteamanoj.
Post la koncerto mi revenis al miaj amikoj, kaj ŝi revenis al la siaj.
After the concert I returned to my friends, and she returned to her own group.
La siaj is licensed because the understood plural people belong with third-person subject ŝi. It follows al, so it has no accusative -n.
Sia without a noun
Noun omission does not change reflexive reference. Sia/siaj still points to the third-person subject of its clause; lia/ŝia/ilia points elsewhere.
Leo prenis sian bileton, kaj Marta prenis la sian.
Leo took his own ticket, and Marta took hers.
In the second clause, la sian points to subject Marta. If the sentence said Marta prenis la lian, the ticket would belong to Leo or another male person, not to Marta.
La infanoj ordigis siajn ludilojn, sed la gastoj ne ordigis la siajn.
The children tidied their toys, but the guests did not tidy theirs.
The two occurrences of sia- have different antecedents because each belongs to its own clause. The first points to la infanoj; the second points to la gastoj.
When repetition is clearer
Ellipsis works only when the missing noun is easily recoverable. If several nouns with different number or meaning compete, repeat the noun.
Mi vidis vian foton kaj lian artikolon, sed mi ankoraŭ ne legis lian artikolon.
I saw your photo and his article, but I have not yet read his article.
Bare lian could theoretically recover artikolon, but repeating it prevents a momentary question about whether foton or artikolon is intended. Clear international usage values recoverability over forced brevity.
Common Mistakes
1. Inventing an O-form for “mine”
❌ Tiu biciklo estas mio.
Incorrect: Esperanto keeps the possessive A-form when the noun is omitted.
✅ Tiu biciklo estas mia.
That bicycle is mine.
2. Forgetting accusative case on a nounless possessive
❌ El la du ombreloj mi prenis mia kaj lasis via.
Incorrect: both understood singular nouns are direct objects.
✅ El la du ombreloj mi prenis mian kaj lasis vian.
Of the two umbrellas, I took mine and left yours.
3. Forgetting the number of the omitted noun
❌ Ŝiaj ŝuoj estas malsekaj, sed mia estas sekaj.
Incorrect: the understood noun ŝuoj is plural, so use miaj.
✅ Ŝiaj ŝuoj estas malsekaj, sed miaj estas sekaj.
Her shoes are wet, but mine are dry.
4. Using la before a possessive that still has a noun
❌ La mia valizo estas peza.
Incorrect in neutral prose: mia already determines expressed noun valizo.
✅ Mia valizo estas peza.
My suitcase is heavy.
5. Using sia for first person
❌ Mi trovis lian pasporton, sed mi perdis sian.
Incorrect: sia cannot refer to subject mi.
✅ Mi trovis lian pasporton, sed mi perdis mian.
I found his passport, but I lost mine.
Key Takeaways
Use the ordinary possessive A-form without a noun when context supplies that noun: mia, miaj, mian, miajn. Agreement still reflects the omitted noun, and direct-object forms still take -n. Bare mia is often sufficient; la mia can identify a particular known one, but la mia libro is not the neutral construction. Reflexive sia keeps its normal clause-bound antecedent even when its noun is omitted.
Related Topics
- Possessive Forms in -AA1 — Form Esperanto possessives by adding -a to personal pronouns and use them as determiner-like words before nouns.
- Possessive AgreementA2 — Make possessive A-words agree in number and accusative case with the possessed noun, not with the possessor.
- The Possessive SiaA1 — Use sia for a third-person subject's own possession and make it agree with the possessed noun.
- Noun EllipsisB1 — How Esperanto omits a recoverable noun while preserving number, case, and meaning on the words that remain.
- Possessives as DeterminersA1 — How mia, via, lia, and the other possessive forms identify a noun phrase and agree with the possessed item.
- Substantivized AdjectivesA1 — Distinguish adjectives used with an omitted noun from true nouns formed from the same root, and mark number and case correctly in both patterns.