Esperanto word order is flexible because grammatical roles are usually visible. In La kato postkuras la hundon, unmarked la kato is the subject and la hundon is the object. Moving those phrases does not erase their roles: La hundon postkuras la kato still means “The cat is chasing the dog.”
“Free,” however, does not mean random. Subject–verb–object is the most frequent neutral order, while other orders organize topic, focus, contrast, rhythm, or end weight. Case permits the alternatives; discourse explains why a speaker chooses one.
The page on objects before the verb develops the discourse strategy in detail; this page concentrates on how case makes reordered clauses possible.
The six basic orders preserve one event
With one clearly marked subject and one clearly marked object, all six logical orders are grammatically possible:
| Order | Esperanto | Typical discourse effect |
|---|---|---|
| SVO | La kato postkuras la hundon. | neutral default |
| SOV | La kato la hundon postkuras. | object already topical or rhythmic |
| VSO | Postkuras la kato la hundon. | event-first, marked |
| VOS | Postkuras la hundon la kato. | event first, subject in final focus |
| OSV | La hundon la kato postkuras. | object topic or contrast |
| OVS | La hundon postkuras la kato. | object given, subject newly identified |
The table gives tendencies, not automatic meanings. Intonation and context can change the focus. What does not change is the basic direction of the action: la kato performs it and la hundon receives it.
La direktoro subskribis la kontrakton antaŭ tagmezo.
The director signed the contract before noon.
La kontrakton subskribis la direktoro, ne la juristo.
The director—not the lawyer—signed the contract.
The second order works naturally when the contract is already under discussion and the identity of the signer is the new or corrected information.
Case survives every movement
An object remains accusative before the subject, after it, or on the other side of the verb. Every eligible agreeing word inside the object phrase carries -n:
Tiujn tri gravajn proponojn la komitato diskutos morgaŭ.
Those three important proposals, the committee will discuss tomorrow.
Tiujn, gravajn, and proponojn show the object role; the numeral tri is invariable. The article la is also invariable. Moving the phrase does not allow partial marking.
Pronouns behave the same way and often appear before the verb without strong emphasis:
Mi ĝin jam kontrolis, do vi povas sendi ĝin.
I have already checked it, so you can send it.
Subject–object–verb order with a short, given pronoun is ordinary neutral usage. Object-first order normally adds more contrast:
Lin mi ne invitis; mi invitis lian fratinon.
I did not invite him; I invited his sister.
Eligible correlatives make the role equally visible:
— Kion elektis la kliento? — Nenion; ĉio estis tro multekosta.
— What did the customer choose? — Nothing; everything was too expensive.
Kion and nenion are objects even though they come first. La kliento is the unmarked subject of the question; the short reply leaves that subject and the verb understood.
Topic first, focus late
Esperanto often places established material early and new, contrastive, or heavy material later. This general information-flow principle explains many non-SVO orders better than a list of “emphatic” patterns.
La hotelon ni jam rezervis; la flugbiletojn ni aĉetos vendrede.
We have already booked the hotel; we will buy the plane tickets on Friday.
The two fronted objects form parallel topics in a travel plan. The order is marked relative to plain SVO but entirely natural in context.
— Kiu riparis la biciklon? — La biciklon riparis mia najbarino.
— Who repaired the bicycle? — My neighbor repaired the bicycle.
The answer begins with the given bicycle and places the requested new information, mia najbarino, at the end. English normally relies on stress or a cleft; Esperanto can combine stress with order.
Heavy noun phrases also tend to come late:
La proponon subtenis preskaŭ ĉiuj reprezentantoj de la lokaj asocioj.
The proposal was supported by almost all representatives of the local associations.
This is grammatically active despite the natural passive English translation. La proponon is the object; the long unmarked phrase is the subject of subtenis.
Word order cannot replace valency or role marking
English identifies many roles through position. Esperanto position contributes interpretation, but it does not normally replace case:
La infano vekis la patron.
The child woke the father.
La infanon vekis la patro.
The father woke the child.
The reversal comes from the endings, not merely from putting one participant first. A phrase after the verb can still be a subject:
Hieraŭ aperis nova problemo.
A new problem appeared yesterday.
Nova problemo is the subject of intransitive aperis. Adding -n because it follows the verb would falsely turn it into an object that aperi cannot license.
Similarly, fronting a prepositional complement does not turn it into an object:
Pri tiu afero mi ne volas diskuti nun.
I do not want to discuss that matter now.
Pri tiu afero keeps its preposition and base forms. Ordinary prepositions already mark the role, so object -n is not added mechanically.
Not every -n phrase is an object
Direction and measure phrases can also move freely:
Dek kilometrojn ni marŝis antaŭ la tagmanĝo.
We walked ten kilometers before lunch.
Hejmen ŝi veturis per la lasta buso.
She traveled home on the last bus.
Dek kilometrojn marks extent and hejmen direction. Neither is a direct object. Their fronting makes them topical or contrastive, but their interpretation comes from the construction with marŝi and veturi.
This matters when more than one -n phrase appears:
La valizon ŝi portis hejmen du kilometrojn piede.
She carried the suitcase home for two kilometers on foot.
La valizon is the object, hejmen the goal, and du kilometrojn the extent. Free placement does not merge those roles.
Where freedom becomes risky
The less visible the morphology, the more Esperanto relies on neutral order and context. Numerals, ambaŭ, infinitives, clauses, and quotations cannot show object -n. Original foreign names are different: accepted usage may leave them unmarked when attaching an Esperanto ending would be awkward. Two such unmarked names can therefore be ambiguous:
Alex renkontis Sam ĉe la kongreso.
Alex met Sam at the congress.
Neutral SVO strongly favors Alex as subject and Sam as object, but the forms themselves do not prove it. For precision, adapt or mark one name, add a role-bearing noun, or rewrite: Alex renkontis sian amikon Sam.
Long discontinuous phrases are another risk. Even when every ending is correct, forcing a reader to hold several unresolved dependencies reduces clarity. PMEG’s main word-order principle is comprehensibility: morphology gives freedom, but not an obligation to display it.
Negation and small scope words are less free
Large clause constituents can move, but words such as ne, nur, ankaŭ, and eĉ normally stand immediately before what they modify. Moving the object while leaving nur behind can change the meaning:
Mi legis nur la resumon.
I read only the summary.
Nur la resumon mi legis.
It was only the summary that I read.
These are close in meaning because nur stays with the object. Mi nur legis la resumon can instead suggest “I only read the summary” as opposed to discussing or editing it. Free constituent order does not mean free scope-particle placement.
Norm, attestation, and register
Fundamenta texts already use preverbal objects and varied clause orders. PMEG explicitly states that all six simple subject–verb–object permutations are possible, while identifying SVO as most frequent and comprehensibility as the governing principle. Modern corpus prose confirms that OSV and OVS are productive when information structure motivates them.
SVO is the best pedagogical default. SOV with pronouns and object fronting for topic or contrast are common across registers. Repeated verb-initial or highly discontinuous arrangements are more conspicuous and occur more in (literary), rhetorical, or poetic writing. None of these register differences licenses case loss.
Common Mistakes
1. Dropping -n after fronting an object.
❌ La fakturo mi pagos morgaŭ.
Incorrect — word order does not replace object marking.
✅ La fakturon mi pagos morgaŭ.
I will pay the invoice tomorrow.
2. Marking only part of a moved noun phrase.
❌ Tiujn grava dokumentojn ni konservos.
Incorrect — the adjective must agree in case.
✅ Tiujn gravajn dokumentojn ni konservos.
We will keep those important documents.
3. Adding -n to a postverbal subject.
❌ Post la paŭzo aperis novan preleganton.
Incorrect — the person appearing is the subject of aperis.
✅ Post la paŭzo aperis nova preleganto.
A new speaker appeared after the break.
4. Adding object -n after a fronted preposition.
❌ Kun mian fraton mi vojaĝos.
Incorrect — kun already marks the relationship.
✅ Kun mia frato mi vojaĝos.
I will travel with my brother.
Key Takeaways
- Accusative marking preserves subject and object roles across varied word orders.
- SVO is neutral; other orders normally manage topic, focus, contrast, rhythm, or weight.
- Every eligible word inside a moved object phrase keeps its agreement.
- Prepositional, directional, and measure phrases retain their own roles when moved.
- When morphology is invisible or a sentence becomes hard to process, neutral order and explicit phrasing restore clarity.
Related Topics
- Objects before the VerbB1 — How fronted and preverbal objects use accusative marking to preserve roles while managing topic, contrast, and information flow.
- Adjective Agreement in the AccusativeA1 — Learn when Esperanto adjectives copy the accusative -n, how -ajn is built, and why predicative adjectives normally remain without -n.
- Neutral SVO OrderA2 — Use subject–verb–object as Esperanto's unmarked order, and depart from it only when context gives the new order a clear discourse purpose.
- Marked OSV and OVS OrdersA2 — Use object-first OSV and OVS order for established topics and deliberate contrasts while preserving accusative marking and clear phrase boundaries.
- Avoiding Ambiguity in Free OrderB1 — Use Esperanto's flexible constituent order without obscuring grammatical roles, modifier attachment, particle scope, or information structure.