Indonesian ter- often presents a result or endpoint while leaving an intentional actor in the background. A door can be terbuka “open,” a person can terjatuh “fall unexpectedly,” writing can be terbaca “readable,” and a sound can be terdengar “audible.” These readings look different in English, but all reduce the prominence or control of an actor.
This page introduces form and neutral clause shapes. The following pages handle arguments, construction choice, and preverbal particles; the word-formation guide gives the complete allomorphy. Actual ter- words are written solid.
The four required models
| Clause | Main reading | Subject | What is foregrounded |
|---|---|---|---|
| Pintunya terbuka | result state | the door | the open condition |
| Saya terjatuh | involuntary event | the person who falls | the uncontrolled endpoint |
| Tulisan itu terbaca | readability/achieved perception | the writing | whether reading succeeds |
| Suaranya terdengar | audibility/perception | the sound | whether hearing succeeds |
Pintu samping masih terbuka sejak subuh.
The side door has remained open since dawn.
Saya terjatuh saat mengejar bus di terminal.
I fell while chasing a bus at the terminal.
Tulisan itu masih terbaca meskipun tintanya pudar.
The writing is still readable even though the ink has faded.
Suaranya terdengar sampai ke luar ruangan.
His or her voice can be heard outside the room.
The first noun phrase is not always an intentional agent. It may bear a state, undergo an event, or be the theme that can be perceived.
Formation: attach ter- to the base
With most bases, the basic pattern is ter- + base, written as one word.
| Base | Analysis | Surface form |
|---|---|---|
| buka | ter- + buka | terbuka |
| jatuh | ter- + jatuh | terjatuh |
| baca | ter- + baca | terbaca |
| dengar | ter- + dengar | terdengar |
| lihat | ter- + lihat | terlihat |
| tinggal | ter- + tinggal | tertinggal |
Dari jendela ini, gunung itu terlihat jelas.
From this window, the mountain is clearly visible.
Dompet saya tertinggal di dalam taksi.
I accidentally left my wallet in the taxi.
Some bases beginning with r and some established families show special forms such as terasa and terekam. Learn those through the dedicated formation page rather than spelling them by guesswork.
Getaran halus masih terasa di ruang rapat.
A faint vibration can still be felt in the meeting room.
Percakapan itu terekam oleh kamera keamanan.
The conversation was recorded by the security camera.
The hyphen belongs only in the abstract label ter-. Never write ordinary ter-buka or ter-jatuh.
Resultant states
Stative ter- says what condition holds, often as the result of an earlier event. It does not itself assert who performed that event.
Jendela kamar masih tertutup.
The bedroom window is still closed.
Jadwal piket sudah tertulis di papan dekat lift.
The duty roster is already written on the board near the elevator.
Kantor pos terletak di seberang pasar.
The post office is located opposite the market.
Kotak itu terbuat dari kayu ringan.
That box is made of lightweight wood.
Compare a deliberate event and its resulting condition:
Petugas membuka pintu samping setiap pagi.
The attendant opens the side door every morning.
Pintu samping dibuka oleh petugas setiap pagi.
The side door is opened by the attendant every morning.
Pintu samping terbuka sepanjang jam kerja.
The side door remains open throughout business hours.
Dibuka reports an opening event and readily names its actor. Terbuka describes the open state. English is open can hide this difference, so translate the whole clause rather than one prefix.
Involuntary and low-control events
With event roots, ter- can present the subject as undergoing something sudden, unplanned, or not fully controlled.
Rina tersandung kabel di dekat pintu.
Rina tripped over a cable near the door.
Anak itu tertidur di sofa sambil menunggu ibunya.
The child fell asleep on the sofa while waiting for his or her mother.
Ponsel saya terjatuh dari saku saat berlari.
My phone fell out of my pocket while I was running.
Buku Anda terbawa pulang oleh adik saya karena sampulnya mirip.
My younger sibling took your book home by mistake because its cover looked similar.
“Accidental” is a useful first label, but it is not exhaustive. Tertidur may be gradual rather than a mistake; tersenyum can describe a spontaneous reaction. The deeper pattern is reduced control and prominence of the attained endpoint.
Dia tersenyum ketika membaca pesan dari anaknya.
She smiled when reading a message from her child.
Some simple roots also describe an unplanned event: Saya jatuh is perfectly normal. Saya terjatuh makes the undergone or unexpected quality more explicit.
Tadi saya jatuh di dekat tangga, tetapi tidak terluka.
I fell near the stairs earlier, but I was not injured.
Saya terjatuh karena anak tangganya licin.
I fell because the step was slippery.
Ability, visibility, and audibility
With baca, lihat, dengar, jangkau, and similar roots, ter- can present whether a perceptual or practical endpoint is attainable. This reading is especially frequent under negation.
Tulisan pada label itu tidak terbaca tanpa kaca pembesar.
The writing on that label cannot be read without a magnifying glass.
Nomor rumahnya tidak terlihat dari jalan.
The house number cannot be seen from the street.
Suara pengumuman tidak terdengar dari peron dua.
The announcement cannot be heard from platform two.
Desa itu belum terjangkau jaringan internet.
That village has not yet been reached by the internet network.
Positive forms are possible when context presents successful perception:
Setelah lampunya dinyalakan, tulisan itu terbaca dengan jelas.
After the light was turned on, the writing could be read clearly.
Dari lorong, suara musik terdengar pelan.
From the corridor, the music can be heard faintly.
The theme—writing, number, sound, or village—is the subject. To center the perceiver, use an active clause:
Saya tidak bisa membaca tulisan sekecil itu.
I cannot read writing that small.
Kami mendengar suara musik dari lorong.
We hear music from the corridor.
Agent suppression is part of the meaning
Stative ter- normally does not make room for a freely added actor, because it predicates a condition rather than an action.
Pintu belakang tertutup rapat.
The back door is tightly closed.
If the security guard's deliberate act matters, choose di-:
Pintu belakang ditutup oleh satpam pukul sepuluh.
The back door was closed by the security guard at ten.
Accidental transitive and abilitative families can sometimes express a secondary actor or perceiver with oleh, as in terbawa pulang oleh adik saya or tidak terbaca oleh petugas. That does not make agent expression as free as it is with eventive di-.
Tulisan itu tidak terbaca oleh petugas karena tintanya pudar.
The writing cannot be read by the officer because the ink has faded.
The clause still centers failed readability, not a deliberate reading action.
Not every ter- word is accidental or verbal
Tertinggi is a superlative “highest,” not an accident. Termasuk “be included/include,” tertarik “interested,” and terhadap “toward/regarding” have established lexical behavior.
Gedung itu merupakan bangunan tertinggi di kota.
That building is the tallest structure in the city.
Semua calon, termasuk peserta cadangan, wajib hadir.
All candidates, including the alternates, are required to attend.
Saya tertarik pada sejarah kawasan itu.
I am interested in the history of that area.
Superlatives and lexicalized families have dedicated pages. Their existence is the clearest warning against translating ter- as a fixed word meaning “accidentally.”
Time and modality remain separate
Ter- is not past tense. Separate particles and context locate the state or event.
Pintunya sudah terbuka.
The door is already open.
Pintunya belum terbuka.
The door is not open yet.
Besok akses samping akan terbuka untuk umum.
Tomorrow the side entrance will be open to the public.
Suaranya tidak terdengar tadi malam karena listrik padam.
His or her voice could not be heard last night because the power was out.
Sudah, belum, akan, and tidak remain separate. The full scope system belongs to the aspect and negation page.
Orthography checkpoints
Write terbuka, terjatuh, terbaca, and terdengar solid. Attach -nya in pintunya and suaranya. Distinguish passive di- from locative di:
Pintunya dibuka di ruang belakang.
The door is opened in the back room.
Dibuka is one passive word; di ruang belakang is a separate location phrase.
Common Mistakes
1. Forcing an accidental reading on a state
❌ Pintunya terbuka berarti seseorang membukanya tanpa sengaja.
Incorrect interpretation—terbuka can simply describe the open state.
✅ Saat kami sampai, pintunya sudah terbuka lebar.
When we arrived, the door was already wide open.
2. Adding a deliberate actor to a result state
❌ Pintu itu terbuka oleh petugas pukul tujuh.
Incorrect for the deliberate opening event—terbuka presents a state.
✅ Pintu itu dibuka oleh petugas pukul tujuh.
The door was opened by the officer at seven.
3. Making the perceiver subject of terlihat
❌ Saya tidak terlihat nomor rumah itu.
Incorrect for ‘I cannot see the house number’—terlihat centers the visible theme.
✅ Saya tidak bisa melihat nomor rumah itu.
I cannot see that house number.
4. Separating the prefix
❌ Saya ter jatuh ketika turun dari bus.
Incorrect spelling—the prefix attaches to jatuh.
✅ Saya terjatuh ketika turun dari kereta.
I fell while getting off the train.
5. Copying English be before a ter- predicate
❌ Pintunya adalah terbuka sejak pagi.
Incorrect—an ordinary ter- state does not take adalah as an English-style copula.
✅ Pintunya sudah terbuka sejak pukul enam.
The door has been open since six.
Key Takeaways
- Result state, involuntary event, and attainable perception share reduced actor control and a prominent endpoint.
- Pintunya terbuka describes a state; Pintu dibuka petugas reports a deliberate passive event.
- Saya terjatuh centers an undergoer, while Tulisan terbaca and Suara terdengar center perceptible themes.
- Agents are suppressed or secondary, not freely added as though every ter- clause were a di- passive.
- Ter- attaches solidly and does not mark tense or always mean “accidentally.”
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Start learning Indonesian →Related Topics
- ter-: Formation and AllomorphyA2 — Form ter- words with canonical solid attachment, productive loss of the prefix-final r in defined environments, and accurate recovery of the dictionary base.
- ter-: Meanings and Derivational NetworkC1 — Connect stative, uncontrolled, abilitative, and superlative ter- readings through low actor control and prominence of a result or endpoint.
- ter- Involuntary and Stative Voice: Subjects, Objects, and Argument OrderC1 — Identify the subject, suppressed actor, experiencer, and other participants in stative, accidental, and perceptibility clauses with ter-.
- ter- Involuntary and Stative Voice: Choosing This ConstructionC1 — Choose ter- when a result, low-control undergoer, or perceptible theme matters more than an intentional actor or bounded action.
- di- Passive: Overview and FormationA1 — Recognize and form the Indonesian di- passive, where an affected patient is subject and a third-person agent may follow or remain unspoken.
- ter- versus di-B1 — Choose ter- for attained states, reduced control, and perceptibility, and di- when an affected participant remains central inside an eventive passive.