Mau tidak mau, kami menunda perjalanan karena dia nekat keluar tanpa mantel.

Mau tidak mau is a fixed expression meaning whether one wants to or not, like it or not, or necessarily.

Literally, it looks like want, not want, which is why it feels repetitive. But as a set phrase, it means that there is really no choice.

In this sentence, it means:

• Like it or not, we postponed the trip
• or We had no choice but to postpone the trip

It is very commonly placed at the beginning of a sentence for emphasis.

Because mau tidak mau is functioning as an introductory phrase, separate from the main clause.

So the structure is:

• Mau tidak mau, = introductory adverbial phrase
• kami menunda perjalanan = main clause

In English, this is similar to writing:

• Like it or not, we postponed the trip.

The comma helps mark that pause. In informal writing, punctuation may vary, but the comma is very natural here.

This is an important pronoun difference in Indonesian:

• kami = we, but not including the listener
• kita = we, including the listener

So kami menunda perjalanan means we postponed the trip, but the person being spoken to is not part of that we.

If the speaker wanted to include the listener, they would usually say kita menunda perjalanan.

Menunda means to postpone, to delay, or to put off.

It comes from the base word tunda. When the active verb prefix meN- is added, tunda becomes menunda.

This is a common sound change in Indonesian:

• base: tunda
• with meN-: menunda

So:

• menunda perjalanan = to postpone the trip/journey

Because this is an active sentence, menunda is the expected form.

Perjalanan is a noun meaning journey, trip, or travel. So menunda perjalanan means to postpone the trip/journey.

You generally postpone a thing/event/plan, not the act to go itself. That is why a noun works naturally here.

Compare:

• menunda perjalanan = postpone the trip
• menunda keberangkatan = postpone the departure

Menunda pergi is possible in some contexts, but it sounds less natural here than menunda perjalanan.

Perjalanan comes from jalan, which often means road, street, or to walk/go depending on context.

With the affixes per- and -an, it becomes perjalanan, a noun meaning:

• journey
• trip
• travel

So this is a derived noun built from the idea of going/traveling.

Some related words:

• jalan = road / walk / go
• berjalan = to walk / to proceed
• perjalanan = journey / trip

Karena means because.

It introduces the reason:

• kami menunda perjalanan = we postponed the trip
• karena dia nekat keluar tanpa mantel = because he/she recklessly went out without a coat

So the sentence structure is:

• statement: kami menunda perjalanan
• reason: karena dia nekat keluar tanpa mantel

It works very much like English because.

Nekat means something like:

• recklessly daring
• acting boldly despite risk
• doing something despite knowing it may be a bad idea

It is not exactly the same as brave.

Brave is usually positive.
Nekat often suggests that the person is being rash, stubborn, or ignoring danger.

So dia nekat keluar tanpa mantel suggests something like:

• he/she rashly went out without a coat
• he/she insisted on going out without a coat
• he/she went out without a coat even though it was a bad idea

Depending on context, nekat can sound critical, impressed, or both.

Keluar means to go out or to go outside.
Pergi means to go or to leave more generally.

So:

• keluar focuses on going from inside to outside
• pergi focuses more generally on leaving or going somewhere

In this sentence, keluar tanpa mantel strongly suggests someone went outside without wearing a coat, so keluar is a very natural choice.

If you used pergi, the meaning would be a bit less specific.

Yes. Tanpa means without, and mantel means coat.

So tanpa mantel literally means without a coat.

In context, it naturally implies:

• without wearing a coat
• not having a coat on

Indonesian often leaves out words that English might include if the meaning is obvious. A more explicit version could be:

• tanpa memakai mantel = without wearing a coat

But tanpa mantel is shorter and completely natural.

Dia can mean either he or she.

Indonesian third-person singular pronouns usually do not mark gender the way English does. So the gender has to come from context.

That means:

• dia nekat keluar tanpa mantel could mean
  • he recklessly went out without a coat
  • or she recklessly went out without a coat

It does not have to be at the beginning, but that is the most common and natural position.

For example:

• Mau tidak mau, kami menunda perjalanan.
• Kami, mau tidak mau, menunda perjalanan.

Putting it first gives it strong emphasis, similar to:

• Like it or not...
• Whether we wanted to or not...

So the beginning position is especially common when the speaker wants to frame the whole sentence as an unavoidable situation.

The sentence breaks down like this:

• Mau tidak mau, = whether we wanted to or not / like it or not
• kami = we (excluding the listener)
• menunda = postponed
• perjalanan = the trip/journey
• karena = because
• dia = he/she
• nekat = recklessly / stubbornly / rashly dared to
• keluar = go out
• tanpa mantel = without a coat

So grammatically, it is:

Introductory phrase + main clause + reason clause

That makes it a very natural Indonesian sentence with a clear flow:

1. unavoidable situation
2. what happened
3. why it happened