Ellipsis and Recoverability | Esperanto Grammar

Ellipsis leaves words unspoken because the listener can reconstruct them from the situation or a parallel expression. Esperanto uses ellipsis freely in answers, coordinated clauses, commands, conventional greetings, and noun phrases. It is not unlimited “dropping”: a missing element must be uniquely recoverable, and the words that remain must still display their own case, agreement, or preposition.

Answer fragments are complete communicative acts

A question supplies a grammatical frame, so an answer can contain only the requested information.

— Kiu telefonis? — Marta.

— Who called? — Marta.

— Kiun vi invitis? — Martan kaj ŝian fraton.

— Whom did you invite? — Marta and her brother.

— Per kio vi malfermis la skatolon? — Per ŝraŭbturnilo.

— What did you open the box with? — With a screwdriver.

The fragments preserve the role requested by the question. Marta is nominative as the subject of understood telefonis. Martan kaj ŝian fraton retain object -n. Per ŝraŭbturnilo retains the preposition. Ellipsis removes predictable material; it does not erase the morphology of what remains.

Negative and adverbial answers can be even shorter:

— Ĉu vi jam sendis la fakturon? — Ankoraŭ ne.

— Have you sent the invoice yet? — Not yet.

This is more natural in (informal) conversation than repeating Ne, mi ankoraŭ ne sendis la fakturon. In a legal statement or other (formal) context where the exact proposition matters, the full sentence may be safer.

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Reconstruct the full answer mentally. Keep every case ending and preposition that the surviving phrase would have in that full sentence.

Conventional expressions no longer need a live antecedent

Some short expressions began as elliptical clauses but are now conventional formulas. Their interpretation comes from usage, not from a sentence uttered moments before.

Bonan matenon! Ĉu vi bone dormis?

Good morning! Did you sleep well?

Dankon pro via rapida respondo.

Thank you for your quick reply.

Ĉion bonan al vi kaj via familio!

All the best to you and your family!

The accusative in bonan matenon, dankon, and ĉion bonan is traditional. Speakers may imagine a fuller clause such as Mi deziras al vi bonan matenon, but no single expansion has to be present in the conversation. Such formulas are neutral across spoken and written correspondence; Saluton! and Dankon! are especially common.

Other context-bound fragments remain more conversational:

Singarde! La planko estas malseka.

Careful! The floor is wet.

Singarde! can be understood as Agu singarde! or Iru singarde!, with the exact verb supplied by the situation.

Ordinary subjects are not freely omitted

English speakers may expect Esperanto to behave like languages that routinely omit pronoun subjects. It does not. If an ordinary finite verb is present, its subject is normally expressed.

Ŝi eliris antaŭ dek minutoj, sed baldaŭ revenos.

She went out ten minutes ago but will return soon.

One expressed ŝi can serve the two coordinated predicates eliris and revenos. That is sharing inside one coordinated structure, not arbitrary omission in an independent sentence.

In rapid (informal) dialogue, a subject can disappear when the question makes it unmistakable:

— Kion faras Leo? — Serĉas siajn ŝlosilojn.

— What is Leo doing? — Looking for his keys.

The full Li serĉas siajn ŝlosilojn remains the pedagogically safe form, especially in writing. This conversational shortening is licensed by immediate recoverability, not by a general rule that Esperanto verbs encode person—they do not.

Volitive main clauses are the major regular exception. The understood subject is normally vi:

Fermu la fenestron, kiam vi foriros.

Close the window when you leave.

The command needs no vi. An explicit vi adds contrast: Tion faru vi, ne mi “You do that, not me.”

An introduced subordinate clause normally needs its own subject. The main-clause subject cannot simply flow across ke, ĉar, se, ĉu, or a relative/question word.

Ŝi diris, ke ŝi revenos antaŭ la oka.

She said that she would return before eight.

Even though both instances refer to the same person, ŝi after ke remains. Ŝi diris, ke revenos... is not the neutral standard construction.

Coordination reveals the boundary clearly:

Ŝi diris, ke ŝi pagos hodiaŭ kaj sendos la kvitancon morgaŭ.

She said that she would pay today and send the receipt tomorrow.

One ke clause contains two predicates sharing ŝi, so the second subject may remain implicit. But if ke is repeated, repeat the subject too:

Ŝi diris, ke ŝi pagos hodiaŭ kaj ke ŝi sendos la kvitancon morgaŭ.

She said that she would pay today and that she would send the receipt tomorrow.

Both are standard. The impossible compromise is ...kaj ke sendos.... The second ke announces a new subordinate clause, whose subject must be present.

Questions show the same principle. Ĉu vi kontrolis la adreson kaj sendis la pakaĵon? has one question frame and a shared subject. With two frames—Ĉu vi kontrolis..., kaj ĉu vi sendis...?—the second vi stays.

Ellipsis across coordinated clauses

Repeated clause material can be stated once when the parallel roles are clear.

Petro venis per buso, kaj Karla per trajno.

Petro came by bus, and Karla by train.

The missing venis in the second member is recoverable, and the different subject Karla remains. If the subject is unchanged, either omit it together with the verb or repeat the verb:

Petro manĝis la supon kaj poste la deserton.

Petro ate the soup and then the dessert.

Petro manĝis la supon, kaj poste li manĝis la deserton.

Petro ate the soup, and then he ate the dessert.

The hybrid Petro manĝis la supon, kaj poste li la deserton is avoided in standard usage: when the repeated main verb disappears, its same-reference subject disappears with it.

A common object may occur once after several clauses:

Lina preparis, Marko kontrolis, kaj mi sendis la finan raporton.

Lina prepared, Marko checked, and I sent the final report.

This is clear because all three verbs take la finan raporton as direct object. If one verb requires a different construction, expand instead of forcing ellipsis.

Noun ellipsis

A noun can be omitted when a preceding adjective, number, or correlative identifies the intended set. The remaining adjective still agrees for number and case.

The dedicated noun-ellipsis page develops article choice and substantivized adjective patterns in more detail.

Mi provos la bluan ĉemizon kaj la verdan.

I will try on the blue shirt and the green one.

Ni bezonas tri volontulojn; du jam aliĝis, sed mankas unu.

We need three volunteers; two have already signed up, but one is missing.

In la verdan, the understood ĉemizon is singular and accusative, so verdan keeps -n. Number words do not take -n here, but the clause and context establish their role.

The article la cannot stand alone as a nominal substitute:

Estas du domoj; ŝi loĝas en tiu el ruĝaj brikoj.

There are two houses; she lives in the one made of red bricks.

Use tiu, retain the noun (la domo el ruĝaj brikoj), or use an adjectival substitute (la brika). Bare la el ruĝaj brikoj leaves no head and is not standard. A bare postposed prepositional modifier is often unclear even without la: prefer Mi ŝatas britajn filmojn, sed ŝi preferas baratajn, not ...ŝi preferas el Barato.

Word order helps recovery

Ellipsis works best when the remnants appear in parallel positions. Neutral SVO establishes the frame before material is omitted. Marked fronting can be grammatical, but it raises the processing cost:

La supon mi mendis, kaj Eva la salaton.

The soup I ordered, and Eva the salad.

This can be understood in a strong contrastive context, but Mi mendis la supon, kaj Eva la salaton gives the ellipsis a clearer model. Case marking helps identify la supon, yet it does not tell the reader every missing relation or discourse contrast.

Heavy remnants should not be separated from their modifiers. If the listener must guess both what is missing and which distant modifier belongs to which noun, the ellipsis is no longer efficient.

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Good ellipsis makes a sentence shorter without creating a second plausible reconstruction. When two expansions are possible, repeat the verb, noun, subject, or preposition.

Common Mistakes

Dropping an ordinary subject without immediate support

❌ Hieraŭ iris al la banko kaj pagis la fakturon.

Incorrect as a context-free statement — the ordinary finite verbs lack a recoverable subject.

✅ Hieraŭ ŝi iris al la banko kaj pagis la fakturon.

Yesterday she went to the bank and paid the bill.

Omitting a subject after ke

❌ Mi pensas, ke alvenos antaŭ la sesa.

Incorrect — the introduced subordinate clause needs its subject.

✅ Mi pensas, ke ili alvenos antaŭ la sesa.

I think they will arrive before six.

Losing case in a fragment

❌ — Kiun vi elektis? — La ruĝa.

Incorrect — the surviving adjective stands for an accusative object.

✅ — Kiun vi elektis? — La ruĝan.

— Which one did you choose? — The red one.

Leaving only la plus a postmodifier

❌ Mi prenos la el vitro.

Incorrect — la alone cannot replace the omitted noun.

✅ Mi prenos tiun el vitro.

I will take the one made of glass.

Key Takeaways

Ellipsis is licensed by unique recoverability, not merely by brevity.
Answer fragments retain the case and prepositions of their full versions.
Ordinary finite verbs normally have subjects; main-clause commands regularly omit understood vi.
A repeated subordinate introducer normally requires a repeated subject.
Noun ellipsis leaves an agreeing adjective, number, or pronoun-like word—not bare la.
Parallel order makes missing material easier to reconstruct than unnecessary fronting or separation.

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