Malay negator choice reveals what kind of claim is being denied. Use tidak for an adjective state that does not hold, belum for a state that has not been reached yet, and bukan when correcting a category or replacing one description with another. The adjective itself never changes.
Restoran itu tidak mahal.
That restaurant is not expensive.
Bilik mesyuarat belum siap.
The meeting room is not ready yet.
English uses not in both translations. Malay forces the speaker to choose between a plain negative state and an incomplete transition.
tidak denies an adjectival state
Place tidak directly before a predicate adjective: tidak mahal, tidak besar, tidak jelas, tidak sesuai. There is no equivalent of English is/are between the subject and the negated adjective.
Harga sarapan tidak mahal jika ditempah bersama bilik.
Breakfast is not expensive if it is booked with the room.
Arahan pada skrin itu tidak jelas.
The instructions on that screen are not clear.
The structure is subject + tidak + adjective. Tidak has scope over the property: the price is denied the property “expensive,” and the instructions are denied the property “clear.” This is the neutral way to negate most adjective predicates in contemporary Standard Malaysian Malay.
Inside a noun modifier, place tidak after yang: pilihan yang tidak mahal, penjelasan yang tidak jelas. The whole yang phrase describes or selects the noun.
Kami mencari hotel yang tidak mahal dan dekat dengan stesen.
We are looking for a hotel that is not expensive and is close to the station.
belum means that a state has not been reached
Belum + adjective means “not adjective yet.” It presents the adjective as an expected or possible endpoint. Belum siap therefore says that readiness has not been reached; it normally leaves open the expectation that the work will become ready later.
Laporan itu belum lengkap; dua jadual masih perlu ditambah.
The report is not complete yet; two tables still need to be added.
Mangga ini belum masak, jadi jangan potong dahulu.
This mango is not ripe yet, so don’t cut it yet.
Compare tidak siap and belum siap. Tidak siap simply denies readiness and can describe a final failure: Projek itu tidak siap mengikut jadual “The project was not completed on schedule.” Belum siap views the same scale from an earlier point and implies that completion remains pending.
Dewan itu belum bersih kerana kerja mengecat baru selesai.
The hall is not clean yet because the painting work has just finished.
Not every adjective naturally names a reachable stage. Belum mahal is possible only in a context where a price is expected to rise, roughly “not expensive yet.” Without that developing context, ordinary tidak mahal is the correct description.
bukan corrects a category or a proposed description
The basic opposition is not “adjective equals tidak, noun equals bukan” in every imaginable sentence. That rule gives the neutral defaults, but bukan can precede an adjective when the speaker rejects one analysis and replaces it with another. The clearest frame is bukan X, melainkan Y “not X, but rather Y” (formal/careful).
Barang itu bukan mahal, melainkan sukar didapati.
The item is not expensive; rather, it is hard to find.
This uses the required contrastive structure. The compact wording bukan mahal melainkan langka is intelligible, but langka is marked in Kamus Dewan as Jakarta usage (Indonesian-associated), so it is not a safe neutral Malaysian learner model. Contemporary Standard Malaysian Malay normally uses sukar didapati, jarang ditemui, or terhad, depending on the intended meaning. The speaker is not simply describing the price as non-expensive; they are correcting the listener’s diagnosis: expense is not the relevant explanation, but limited availability is.
Bilik itu bukan kecil, tetapi susunannya kurang praktikal.
The room is not small; rather, its layout is impractical.
Keputusan itu bukan salah, cuma belum muktamad.
The decision is not wrong; it is simply not final yet.
In conversation, tetapi, cuma, or intonation often replaces formal melainkan. The contrastive logic remains. A bare Bilik itu bukan besar sounds marked if all you mean is “The room isn’t big”; use Bilik itu tidak besar. Bukan becomes natural when an earlier label is being quoted, rejected, or corrected.
The same distinction appears with selected yang phrases. Saya mahu yang tidak mahal asks for one whose price lacks the property “expensive.” Bukan yang mahal rejects the expensive member of a set.
Saya mahu yang tidak mahal tetapi tahan lama.
I want one that is not expensive but lasts a long time.
Ambil yang sederhana besar, bukan yang besar sekali.
Take the medium-sized one, not the very large one.
Here bukan has scope over the entity selected by yang, not directly over the adjective. See bukan in negative clauses for nominal predicates and wider contrastive syntax.
Scope with degree expressions
The negator normally comes before the entire degree phrase: tidak terlalu mahal “not too expensive,” tidak begitu jelas “not particularly clear,” and belum cukup matang “not mature enough yet.” Moving the negator changes or destroys that structure.
Sewa rumah itu tidak terlalu mahal jika dikongsi bertiga.
The rent for that house is not too expensive if it is shared by three people.
Penjelasannya tidak begitu jelas kepada orang awam.
The explanation is not particularly clear to the general public.
Buah itu belum cukup masak untuk dimakan.
The fruit is not ripe enough to eat yet.
Tidak terlalu mahal does not necessarily mean “cheap”; it denies that the price exceeds an acceptable limit. Tidak begitu jelas often moderates criticism (polite/careful). Degree and politeness receive fuller treatment on the moderated judgments page.
From state to entity with yang
Adding yang lets a negated adjective identify an understood person or thing. This is ordinary ellipsis: the missing noun must be recoverable from context.
Daripada semua cadangan itu, pilih yang tidak rumit.
From all those proposals, choose the one that is not complicated.
Fail yang belum lengkap diletakkan di atas meja saya.
The files that are not complete yet were placed on my desk.
In the first sentence, yang tidak rumit stands for “the proposal that is not complicated.” In the second, yang belum lengkap directly modifies fail. In both, the negator stays inside the yang phrase and before the adjective.
Common Mistakes
1. Using bukan for every English not
❌ Makanan di situ bukan mahal.
Marked and unnatural as a neutral price description—bukan suggests a correction that is not supplied.
✅ Makanan di situ tidak mahal.
The food there is not expensive.
2. Using tidak when “not yet” is intended
❌ Laporan itu tidak siap; saya akan menghantarnya petang nanti.
The first clause merely denies readiness and misses the intended pending-stage meaning.
✅ Laporan itu belum siap; saya akan menghantarnya petang nanti.
The report is not ready yet; I will send it this afternoon.
3. Putting the negator after the adjective
❌ Bilik ini besar tidak.
Incorrect neutral word order for an adjectival negative.
✅ Bilik ini tidak besar.
This room is not large.
4. Placing tidak before yang inside a modifier
❌ Kami mahu bilik tidak yang mahal.
Incorrect—the negated property belongs inside the yang phrase.
✅ Kami mahu bilik yang tidak mahal.
We want a room that is not expensive.
5. Combining belum with a static adjective without a developing context
❌ Restoran itu belum murah.
Unnatural if the intended meaning is simply that the restaurant is not cheap.
✅ Restoran itu tidak murah.
That restaurant is not cheap.
Key Takeaways
Use tidak to deny a state, belum to say that an expected state has not been reached, and contrastive bukan to reject one category or description in favor of another. In a modifier, say yang tidak mahal or yang belum siap. The choice among the three negators diagnoses state, category, or incomplete transition; it is not a mechanical translation of English not.
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