Indonesian conversation often uses a single word or phrase as a complete turn. Sudah, Belum, Bisa, Yang merah, and Di rumah can each answer a question because the surrounding exchange supplies the missing material. These are not defective sentences waiting to be expanded; they are contextually complete conversational moves.
English also permits fragments, but English learners often overcorrect in Indonesian by repeating subjects, auxiliaries, and objects. Natural Indonesian chooses the shortest form that remains recoverable.
The broader system of zero reference is developed in pronoun and argument omission.
Recoverability is the central rule
Ellipsis leaves material unspoken when listeners can reconstruct it from the immediately preceding words, the physical situation, or shared knowledge. A fragment is successful only if that reconstruction is easy.
A: Laporannya sudah dikirim? B: Sudah.
A: Has the report been sent? B: Yes, it has.
A: Kamu bisa ikut makan malam besok? B: Bisa.
A: Can you join us for dinner tomorrow? B: I can.
A: Sepatunya yang mana? B: Yang merah.
A: Which shoes? B: The red ones.
A: Rani sekarang di mana? B: Di rumah.
A: Where is Rani now? B: At home.
Each answer is saturated by its question. Sudah recovers “the report has been sent,” Bisa recovers the requested ability, yang merah recovers “the red shoes,” and di rumah recovers “Rani is at home.”
Omitted subjects
Subjects are frequently absent when the speaker, addressee, or current topic is obvious. Indonesian verbs do not carry person endings, so context—not conjugation—identifies the missing participant.
A: Lagi apa? B: Menunggu bus terakhir.
A: What are you doing? B: Waiting for the last bus. (informal)
A: Besok jadi datang? B: Jadi, sekitar jam sembilan.
A: Are you still coming tomorrow? B: Yes, around nine. (informal)
Baru sampai di hotel. Nanti saya telepon lagi.
I just arrived at the hotel. I'll call again later. (informal)
Tolong tunggu di depan apotek.
Please wait in front of the pharmacy.
The understood subject in the first three is supplied by the exchange or the speaker context; in the command it is the addressee. Repeating saya or kamu is possible for contrast, but it is not required merely to make a grammatical clause.
Subject omission is less safe after a topic shift or when two people are plausible.
Rina bertemu Lusi setelah Rina pulang dari kantor.
Rina met Lusi after Rina returned from the office.
Here the repeated name removes the possible interpretation that Lusi returned from work.
Omitted predicates
A noun phrase or another requested complement can stand alone when the question has supplied the missing predicate. This is particularly common in identification, choice, role, and time questions.
A: Siapa yang menjaga loket sore ini? B: Pak Damar.
A: Who is staffing the counter this afternoon? B: Mr. Damar.
A: Mana pesanan untuk meja tujuh? B: Yang di baki biru.
A: Which order is for table seven? B: The one on the blue tray.
A: Kamu pilih ukuran apa? B: Yang sedang.
A: What size are you choosing? B: The medium one.
A: Kapan giliran kita? B: Setelah kelompok ini.
A: When is our turn? B: After this group.
The answers omit material such as “will staff the counter,” “is the order,” or “I choose.” Their phrase category remains visible, while their clause function comes from the question.
Omitted objects
Once an object has been established, Indonesian can omit it from a later predicate.
A: Kopinya sudah dicoba? B: Sudah saya coba sedikit.
A: Have you tried the coffee? B: Yes, I tried a little.
A: Berkas ini mau dibawa ke mana? B: Akan saya antar ke ruang direktur.
A: Where should this file be taken? B: I'll take it to the director's office.
Rotinya masih hangat, jadi kami langsung makan.
The bread was still warm, so we ate it right away.
Kalau bukunya sudah selesai, kembalikan besok.
If you're finished with the book, return it tomorrow.
English normally requires it after tried, take, ate, or return. Indonesian may leave the object unexpressed because only one relevant object is available. An attached -nya can make reference explicit—mencobanya, membawanya, mengembalikannya—but do not express both a clitic object and the same full noun phrase unnecessarily.
Polarity answers: sudah, belum, ya, tidak, and bukan
Indonesian often answers with the word that directly tracks the question's aspect or predicate type.
A: Tiketnya sudah dicetak? B: Belum.
A: Has the ticket been printed? B: Not yet.
A: Pintu belakang terkunci? B: Ya, terkunci.
A: Is the back door locked? B: Yes, it is.
A: Kamu tinggal di gedung ini? B: Tidak.
A: Do you live in this building? B: No.
A: Ini tas milik Rendi? B: Bukan.
A: Is this Rendi's bag? B: No, it isn't.
A: Besok bisa datang lebih awal? B: Bisa.
A: Can you come earlier tomorrow? B: Yes, I can.
Sudah confirms that an expected event has occurred; belum says it has not occurred yet. Tidak rejects a verbal or adjectival proposition, while bukan rejects identity. Bisa can itself confirm ability or practical possibility.
With negative questions, avoid translating English yes and no mechanically. State the actual polarity:
A: Kamu belum makan? B: Belum, saya masih menunggu Dina.
A: Haven't you eaten yet? B: No, I haven't; I'm still waiting for Dina.
A: Kamu tidak ikut rapat? B: Ikut, tetapi saya terlambat sedikit.
A: Aren't you joining the meeting? B: I am, but I'll be a little late.
The second answer repeats the positive predicate ikut, which is clearer than a bare answer whose interpretation could follow different English conventions.
Echo fragments and confirmation
A speaker can repeat a surprising, unclear, or important piece of the previous turn. Intonation makes it a request for confirmation.
A: Kita berangkat jam empat pagi. B: Jam empat?
A: We're leaving at four in the morning. B: Four o'clock?
A: Rapatnya dipindahkan ke atap. B: Ke atap?
A: The meeting has been moved to the rooftop. B: To the rooftop?
A: Saya pesan dua puluh kotak. B: Dua puluh?
A: I ordered twenty boxes. B: Twenty?
A: Yang menghubungi tadi Pak Hasan. B: Pak Hasan?
A: The person who called earlier was Mr. Hasan. B: Mr. Hasan?
An echo is not necessarily a full information question. It targets precisely the part that needs confirmation, correction, or an expression of surprise.
Place, time, and choice fragments
Prepositional, adverbial, and yang phrases are especially productive short answers.
A: Kita bertemu di mana? B: Di pintu selatan.
A: Where should we meet? B: At the south entrance.
A: Kapan kamu kirim hasilnya? B: Besok pagi.
A: When will you send the results? B: Tomorrow morning.
A: Kamu mau kue yang mana? B: Yang paling kecil.
A: Which cake do you want? B: The smallest one.
A: Dari siapa paket ini? B: Dari kantor pusat.
A: Who is this package from? B: From the head office.
These fragments preserve their ordinary word boundaries: locative di and source dari remain separate; yang is a separate word; a clitic such as -nya remains attached to its host.
Full turns, not necessarily full written clauses
Dialogue grammar and edited expository prose have different needs. A one-word answer can be maximally clear in a face-to-face exchange, while an isolated report must restate enough information to stand on its own.
A: Sudah siap? B: Sudah.
A: Ready? B: Yes. (informal)
Seluruh peralatan sudah siap digunakan pada pukul delapan.
All equipment was ready for use at eight o'clock. (formal)
The first exchange is not an inferior abbreviation of the second sentence. It performs a different discourse task. Forcing complete English-style answers into every Indonesian turn can sound repetitive or overly careful.
When a fragment fails
An isolated Sudah is useless if no expected event is active. A bare di sana fails when several places are possible and no gesture identifies one. Good speakers expand just enough to restore a unique interpretation.
Proposal revisinya sudah saya kirim ke alamat baru.
I have sent the revised proposal to the new address.
Saya menunggu di rumah Pak Ali, bukan di kantor.
I'm waiting at Mr. Ali's house, not at the office.
Recoverability is graded rather than mechanical. If a listener hesitates, repeat the noun, pronoun, or predicate that resolves the ambiguity.
Common Mistakes
Answering a not-yet question with ordinary tidak
❌ A: Sudah bayar? B: Tidak.
Incorrect intended answer ‘not yet’ — tidak rejects the proposition without the expected-yet meaning.
✅ A: Sudah bayar? B: Belum.
A: Have you paid? B: Not yet.
Omitting before the referent is established
❌ Sudah dikembalikan tadi siang.
Unclear in isolation — the listener does not know what was returned.
✅ Kunci cadangannya sudah dikembalikan tadi siang.
The spare key was returned this afternoon.
Expressing the same object twice
❌ Saya sudah mengisinya formulir itu.
Incorrect — the clitic -nya and formulir itu express the same object twice.
✅ Saya sudah mengisi formulir itu.
I have filled out that form.
Forcing a full English-style answer
❌ A: Bisa membantu sebentar? B: Saya adalah bisa membantu sebentar.
Incorrect — Indonesian does not insert adalah before bisa to imitate English ‘am able.’
✅ A: Bisa membantu sebentar? B: Bisa.
A: Can you help for a moment? B: Yes.
Mis-capitalizing a place fragment
❌ A: Rapatnya di mana? B: di Rumah.
Incorrect sentence capitalization and common-noun capitalization.
✅ A: Rapatnya di mana? B: Di rumah.
A: Where is the meeting? B: At home.
Key Takeaways
- A short answer is complete when context supplies its omitted subject, predicate, or object.
- Keep the new information and omit material already active in the exchange.
- Sudah, belum, bisa, tidak, and bukan answer different semantic questions.
- Echo fragments target only the information needing confirmation.
- Expand a fragment whenever more than one reconstruction is plausible.
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