Saya masih belum pasti sama ada mahu masuk ke fakulti sains atau fakulti bahasa.

Masih belum means still not yet.

So:

• saya = I
• pasti = sure / certain
• belum = not yet
• masih = still

Together, masih belum pasti means still not sure yet or more naturally in English, still not sure.

Malay often combines masih and belum like this to emphasize that the situation is continuing up to now.

Yes, Saya masih tidak pasti is possible, but belum and tidak are not exactly the same.

• tidak pasti = not sure
• belum pasti = not sure yet

In this sentence, belum fits well because it suggests the speaker may decide later. It has a sense of the decision has not happened yet.

So:

• Saya masih belum pasti = I’m still not sure yet
• Saya masih tidak pasti = I’m still not sure

Both can work, but belum sounds especially natural when talking about an undecided future choice.

Sama ada means whether.

It introduces alternatives or a choice between possibilities.

In this sentence:

• sama ada mahu masuk ke fakulti sains atau fakulti bahasa = whether to enter the science faculty or the language faculty

A very common pattern is:

• sama ada ... atau ... = whether ... or ...

So sama ada often appears with atau.

Usually, yes, when you are clearly presenting two alternatives.

Pattern:

• sama ada A atau B = whether A or B

In this sentence:

• sama ada mahu masuk ke fakulti sains atau fakulti bahasa

That is the normal structure.

In casual speech, some speakers may shorten things, but for learners, sama ada ... atau ... is the safest and most standard pattern to remember.

Yes, ingin could also be used.

• mahu = want to
• ingin = wish to / want to

In many contexts, they are similar. But:

• mahu is very common and natural in everyday language.
• ingin can sound slightly more formal or literary.

So:

• sama ada mahu masuk... = whether to enter / whether I want to enter...
• sama ada ingin masuk... = also correct, a bit more formal

In this sentence, mahu is a very natural choice.

Because the subject is already understood from the beginning of the sentence.

The full idea is:

• Saya masih belum pasti sama ada saya mahu masuk...

But Malay often omits repeated words when the meaning is clear. So the second saya is dropped.

This is very normal in Malay and makes the sentence sound smoother.

Literally, yes, masuk means enter/go into, and ke means to.

But in this context, masuk ke fakulti means something more like:

• enter the faculty
• join the faculty
• enroll in the faculty
• go into that faculty/field of study

So this is a common kind of Malay expression where a literal movement verb is used for institutional entry.

Ke is a preposition meaning to.

Since masuk often works with a destination, ke marks where the person would go:

• masuk ke fakulti sains = enter/go into the science faculty

It functions much like English to in a directional sense.

Because the preposition can be shared by both options.

So:

• masuk ke fakulti sains atau fakulti bahasa

means:

• enter the science faculty or the language faculty

Malay often avoids repeating words when the structure is already clear.

You could theoretically repeat it for emphasis or clarity:

• masuk ke fakulti sains atau ke fakulti bahasa

But in this sentence, leaving out the second ke sounds perfectly normal and natural.

Malay does not have articles like English a/an and the.

So:

• fakulti sains can mean the science faculty, a science faculty, or just science faculty, depending on context.

The listener understands the meaning from the situation, not from an article.

This is a very common adjustment English speakers have to make when learning Malay.

In Malay, nouns often modify other nouns directly.

So:

• fakulti sains = science faculty
• fakulti bahasa = language faculty

This is similar to English noun-noun combinations like science faculty or language department.

You do not need to change sains or bahasa into adjective forms here.

Also, bahasa-bahasa would mean languages in a plural sense, which is not what is needed here. Fakulti bahasa refers to the academic area of language/languages as a field.

Yes, ataupun is also possible.

• atau = or
• ataupun = or / or else

In many cases, they are interchangeable, especially in speech and everyday writing.

So you could say:

• ... fakulti sains atau fakulti bahasa
• ... fakulti sains ataupun fakulti bahasa

Both are acceptable. Atau is simpler and very common.

The given word order is the most natural standard version.

Structure:

• Saya = subject
• masih belum pasti = predicate describing the speaker’s state
• sama ada ... atau ... = clause showing the alternatives

So the sentence flows as:

• I + am still not sure + whether A or B

You might hear slight variations, but for learners, this order is best to follow.

For example, this is natural:

• Saya masih belum pasti sama ada mahu masuk ke fakulti sains atau fakulti bahasa.

A version with heavy reordering would usually sound less natural or more marked.

Pasti is usually understood as an adjective meaning certain/sure.

In Malay, you do not need a verb equivalent to to be in sentences like this.

So:

• Saya pasti = I am sure
• Saya belum pasti = I am not sure yet

English needs am, but Malay does not.

That is why Saya masih belum pasti is already a complete clause without any word for am.

Yes, definitely. It sounds natural and standard.

It is the kind of sentence someone might say when talking about university choices:

• Saya masih belum pasti sama ada mahu masuk ke fakulti sains atau fakulti bahasa.

In very casual speech, people might shorten or simplify parts of it, but this full sentence is completely normal and good Malay.