Kami percaya bahawa itu satu kebetulan.

Kami means we, but specifically we excluding the listener.

Malay has an important distinction:

• kami = we, not including you
• kita = we, including you

So Kami percaya... means We believe..., where the speaker is talking about their group, but not the person being addressed.

If the speaker wanted to include the listener, they would say Kita percaya...

Percaya means believe.

Malay verbs do not use to the way English infinitives do. So where English has:

• to believe
• I believe
• we believe

Malay just uses percaya in all those cases, with the subject showing who is doing the action:

• saya percaya = I believe
• kami percaya = we believe

Malay verbs also do not change form for person or number the way English does. So percaya stays the same whether the subject is I, you, we, or they.

Bahawa means that as a conjunction, introducing a clause.

So in:

Kami percaya bahawa itu satu kebetulan

the part after bahawa is the thing being believed:

• Kami percaya = We believe
• bahawa itu satu kebetulan = that it is a coincidence

This is similar to English that in We believe that it is a coincidence.

In Malay, bahawa is often used in more formal or careful speech and writing. In everyday conversation, it is often omitted:

• Kami percaya itu satu kebetulan

This still means the same thing.

Yes, very often.

Both of these are natural:

• Kami percaya bahawa itu satu kebetulan.
• Kami percaya itu satu kebetulan.

The version with bahawa sounds a bit more explicit and often more formal or written.
The version without it is common in everyday speech.

So if you see bahawa, think of English that in a sentence where English may also choose to include or omit that.

Here itu points to something previously mentioned or understood in context. It often corresponds to English that or it, depending on how English expresses the idea.

In this sentence:

bahawa itu satu kebetulan

the natural English meaning is something like:

• that it is a coincidence
• or that that is a coincidence, depending on context

Malay does not always divide things up exactly the way English does. Itu is a demonstrative meaning that, but in context it can function in ways that English would translate with it.

So the best way to understand it here is: the thing we are talking about is a coincidence.

Malay often leaves out the verb to be in sentences like this.

So where English says:

• That is a coincidence

Malay commonly says:

• Itu satu kebetulan

with no separate word for is.

This is very normal in Malay. The relationship between the two parts is understood from the sentence structure.

You may also sometimes see:

• Itu adalah satu kebetulan

where adalah is added, usually in more formal styles. But in ordinary speech, leaving it out is very common and natural.

Literally, satu means one, and kebetulan means coincidence.

So satu kebetulan literally means one coincidence, but in natural English it usually means a coincidence.

Malay often uses satu where English uses a/an, especially when introducing a singular countable noun.

So:

• itu satu kebetulan = that is a coincidence

In some contexts, just kebetulan might also appear, but satu kebetulan is a very natural way to say a coincidence.

In this sentence, kebetulan is a noun meaning coincidence.

So:

• satu kebetulan = a coincidence

But learners should know that kebetulan can also appear in other expressions and can feel slightly different depending on context. For example:

• Secara kebetulan = by coincidence / coincidentally

So the core idea is coincidence, but the word can appear in different structures.

In Kami percaya bahawa itu satu kebetulan, it is clearly a noun.

Often yes, depending on context.

The literal structure is closer to:

• We believe that it is a coincidence

But in natural English, people often say:

• We think it was just a coincidence
• We believe it was a coincidence

The Malay sentence itself does not explicitly include just or a past tense marker like was. Those may come from context or from the English translation style.

Malay often leaves tense to context unless a time word makes it clear.

No tense is marked directly in this sentence.

Kami percaya bahawa itu satu kebetulan does not by itself tell you whether the meaning is present or past in the same way English does. Malay commonly relies on context for time reference.

So depending on context, it could be understood as:

• We believe that it is a coincidence
• We believed that it was a coincidence

If Malay wants to make time clearer, it can add time words such as:

• sekarang = now
• semalam = yesterday
• dulu = before / in the past

But without those, context does the job.

Yes, you could.

That version is grammatical and slightly more formal or explicit:

• Kami percaya bahawa itu adalah satu kebetulan.

Here, adalah acts like a formal linking word, roughly corresponding to is in this kind of sentence.

However, in normal Malay, especially in speech, the shorter version is very common and natural:

• Kami percaya bahawa itu satu kebetulan.

So both are possible, but the version without adalah is perfectly standard.

Broadly, yes, but not exactly.

The sentence is:

• Kami = we
• percaya = believe
• bahawa = that
• itu = that / it
• satu kebetulan = a coincidence

So the overall order is quite similar to English:

We believe that it is a coincidence.

The main difference is that Malay usually does not need a separate word for is, so the second clause is more literally:

• that that/it a coincidence

with the linking meaning understood.

It sounds fairly neutral, with a slightly formal touch because of bahawa.

• Kami percaya bahawa itu satu kebetulan.
  Neutral to somewhat formal

A more conversational version would often be:

• Kami percaya itu satu kebetulan.

So the sentence is not overly stiff, but bahawa gives it a more careful, written, or formal feel than everyday casual speech.