The buka family lets Malay describe an opener's action, an event affecting something, or the resulting open state without changing tense on the verb. Ali membuka pintu highlights Ali's action, pintu dibuka reports an opening event, and pintu terbuka describes the door as open or having come open. English often uses the same word open across all three, so the Malay voice-and-state contrast deserves deliberate attention.
This page focuses on how the established forms are used. The broader systems of passive di-, stative and non-volitional ter-, and the suffix -kan are treated separately.
The family at a glance
| Form | Perspective | Core meaning | Register |
|---|---|---|---|
| buka | root/command or informal action | open | neutral in commands; informal in many active clauses |
| membuka | actor-centered active event | open something | neutral |
| dibuka | patient-centered passive event | be opened | neutral |
| terbuka | resultant state or non-volitional change | be open; come open | neutral |
| bukakan / membukakan | benefactive action | open something for someone | bukakan common in requests; membukakan neutral |
| pembukaan | nominal event/beginning | opening, inauguration | neutral/formal |
There is no person-or-tense inflection:
| Time/person | Malay | Marker |
|---|---|---|
| I, past | semalam saya membuka akaun | semalam |
| she, ongoing | dia sedang membuka bungkusan | sedang |
| they, future | mereka akan membuka cawangan | akan |
Membuka stays unchanged. It is an active-voice form, not an infinitive or a tense form.
Buka and membuka: an actor performs the action
Bare buka is standard in a direct command. It is also frequent as an informal active verb, especially with familiar routines such as opening a shop, account, application, or fasting meal. Neutral declarative prose generally favors membuka.
Buka tingkap itu sedikit; bilik ini terasa panas.
Open that window a little; this room feels hot.
Kedai tu buka pukul berapa hari Ahad?
What time does that shop open on Sunday? (informal)
In the question, informal buka can describe operating hours. In careful writing, choose a fuller expression such as dibuka, beroperasi, or waktu operasi, depending on meaning.
Aina membuka pintu perlahan-lahan supaya tidak mengejutkan bayi.
Aina opened the door slowly so as not to wake the baby.
Bank itu akan membuka cawangan baharu di Kuala Terengganu.
The bank will open a new branch in Kuala Terengganu.
Saya membuka akaun simpanan melalui aplikasi bank.
I opened a savings account through the bank's app.
The object after membuka is what is made accessible, started, unfolded, or exposed. Context extends physical opening into conventional actions such as membuka mesyuarat “open a meeting,” membuka akaun “open an account,” and membuka peluang “create/open an opportunity.”
Dibuka: an opening event in passive voice
Use dibuka when the opened entity is the grammatical starting point and the event matters more than its actor. An actor can be supplied with oleh.
Pintu dewan dibuka pada pukul tujuh setengah pagi.
The hall doors are opened at seven thirty in the morning.
Sampul itu dibuka oleh pegawai di hadapan semua calon.
The envelope was opened by the officer in front of all the candidates. (formal)
Permohonan biasiswa akan dibuka semula pada bulan Januari.
Scholarship applications will reopen in January. (formal)
Dibuka does not itself mean past. The separate phrases pada pukul tujuh setengah, akan, and other context establish time. Write the verbal prefix solid: dibuka. The spelling di buka is wrong because separate di marks location, as in di pejabat.
Terbuka: state, result, and lack of deliberate control
Terbuka commonly describes an open state or an event whose result is salient and whose agent is absent. It answers “What state is it in?” more readily than “Who opened it?”
Pintu belakang masih terbuka ketika kami sampai.
The back door was still open when we arrived.
Fail itu terbuka sendiri apabila komputer dihidupkan semula.
The file opened by itself when the computer restarted.
Jawatan tersebut terbuka kepada semua warganegara Malaysia yang layak.
The position is open to all eligible Malaysian citizens. (formal)
The contrast is clearest in a matched set:
| Clause | Question it naturally answers |
|---|---|
| Ravi membuka pintu. | What did Ravi do? |
| Pintu dibuka oleh Ravi. | What happened to the door, and by whom? |
| Pintu terbuka. | What state is the door in? |
The boundary is not purely mechanical. Terbuka has lexical extensions such as fikiran terbuka “open mind,” bersikap terbuka “be open/candid,” and terbuka kepada cadangan “open to suggestions.” Learn those as stable combinations.
Bukakan and membukakan: opening for someone
Bukakan is natural in an imperative or informal request. Membukakan is the full active form in a neutral statement. The suffix -kan adds a beneficiary or presents the action as done on someone's behalf.
Tolong bukakan pintu ini untuk saya; tangan saya penuh.
Please open this door for me; my hands are full.
Petugas itu membukakan pintu kereta untuk penumpang warga emas.
The attendant opened the car door for the elderly passenger.
Compare Dia membuka pintu “She opened the door” with Dia membukakan saya pintu “She opened the door for me.” The second construction introduces the person who benefits. In actual Malaysian usage, membukakan pintu untuk saya is often the clearest order when both the object and beneficiary are expressed.
Pembukaan and other lexical members
Pembukaan names an opening event, inauguration, initial section, or newly created opening depending on its complement. It is a noun, not a command or a passive verb.
Pembukaan acara itu diserikan dengan persembahan gamelan.
The opening of the event was enlivened by a gamelan performance.
Menteri tersebut merasmikan pembukaan klinik kesihatan baharu.
The minister officiated at the opening of the new health clinic. (formal)
Pembuka can name something or someone that opens, and it appears in compounds such as pembuka selera “appetizer” and kata pembuka “opening remarks.” Keterbukaan is the abstract noun “openness,” especially toward ideas or in public governance. These are lexicalized meanings, so they cannot be chosen solely by matching an English translation.
The root also appears in established expressions: buka puasa “break the fast,” membuka jalan “pave the way,” membuka mata “make someone aware,” and buka rahsia “reveal a secret” (informal with the bare root). Register and context determine whether bare buka or prefixed membuka is appropriate.
Usaha kecil itu membuka jalan kepada kerjasama yang lebih luas.
That small effort paved the way for broader cooperation.
Common Mistakes
1. Using an active verb for a simple state
❌ Pintu itu membuka sejak tadi.
Incorrect for the intended state—membuka requires an actor-like subject opening something.
✅ Pintu itu terbuka sejak tadi.
That door has been open for a while.
2. Using terbuka for a deliberate passive event
❌ Sampul rasmi itu terbuka oleh pengerusi.
Incorrect for a deliberate event with an expressed actor.
✅ Sampul rasmi itu dibuka oleh pengerusi.
The official envelope was opened by the chairperson.
3. Splitting passive di-
❌ Kaunter itu akan di buka semula selepas rehat.
Incorrect—the passive prefix di- is attached to its verb.
✅ Kaunter itu akan dibuka semula selepas rehat.
The counter will reopen after the break.
4. Treating pembukaan as a verb
❌ Mereka pembukaan cawangan baharu bulan depan.
Incorrect—pembukaan is a noun, not the active verb ‘open.’
✅ Mereka akan membuka cawangan baharu bulan depan.
They will open a new branch next month.
5. Using the benefactive form with no beneficiary
❌ Aina membukakan tingkap kerana bilik itu panas.
Unmotivated for a simple opening when no beneficiary is intended.
✅ Aina membuka tingkap kerana bilik itu panas.
Aina opened the window because the room was hot.
Key Takeaways
Use root buka in commands and labeled informal clauses, membuka for an actor's transitive action, dibuka for an event affecting the opened entity, and terbuka for the open state or salient result. Bukakan/membukakan adds a beneficiary, while pembukaan names an opening event. These forms encode voice, valency, and lexical meaning; time remains in separate words such as sudah, sedang, and akan.
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