Handuk basah digantung di balkon supaya cepat kering.

In Indonesian, adjectives usually come after the noun they describe.

• handuk basah = wet towel
• rumah besar = big house
• air dingin = cold water

So handuk basah is the normal Indonesian word order, even though English says wet towel.

Digantung means hung or is hung.

It comes from the root gantung = to hang.
The prefix di- often marks the passive voice in Indonesian.

So:

• menggantung = to hang something / to be hanging, depending on context
• digantung = is hung / is being hung

In this sentence, handuk basah digantung di balkon focuses on the towel, not on who hung it.

Indonesian uses the passive very naturally, often more often than English does.

Here, the important thing is the towel, not the person doing the action. So Indonesian says:

• Handuk basah digantung di balkon...
  = The wet towel is hung on the balcony...

If you wanted an active version, you could say:

• Seseorang menggantung handuk basah di balkon supaya cepat kering.
  = Someone hangs the wet towel on the balcony so it dries quickly.

But the passive sounds very natural when the doer is unknown, obvious, or unimportant.

No. They look the same, but they are different things.

1. di- in digantung is a prefix that marks the passive.
   It is written attached to the verb.

   • digantung
   • dibuka
   • ditutup

2. di in di balkon is a preposition meaning in, on, at.
   It is written separately.

   • di balkon = on the balcony
   • di rumah = at home
   • di meja = on the table

A very common learner issue is spelling these correctly:

• digantung ✔
• di gantung ✘

but:

• di balkon ✔
• dibalkon ✘

Because Indonesian often leaves out information that is not important or already understood.

In this sentence, the speaker cares about:

• the towel
• where it is placed
• the purpose: drying it quickly

Who did it is not important, so it is omitted.

If you really wanted to include the doer, you could say:

• Handuk basah digantung oleh ibu di balkon supaya cepat kering.
  = The wet towel is hung by mother on the balcony so it dries quickly.

But oleh phrases are often left out unless the doer matters.

Supaya means so that, in order that, or so.

In this sentence:

• supaya cepat kering = so that it dries quickly

It introduces a purpose.

Other examples:

• Saya belajar supaya lulus.
  = I study so that I pass.
• Pintu ditutup supaya tidak dingin.
  = The door is closed so that it won’t be cold.

Common alternatives:

• agar = also so that / in order that, often a bit more formal
• biar = can also mean so that, more informal in many contexts

Because cepat is modifying kering here, with the sense of quickly becoming dry.

In Indonesian, words like cepat can function a bit like an adverb in front of a verb or adjective:

• cepat datang = come quickly
• cepat selesai = finish quickly
• cepat kering = dry quickly

So cepat kering is the natural order.

Basically, kering is an adjective meaning dry.

But Indonesian adjectives can often behave like English stative verbs in sentences, especially because Indonesian does not need a verb like to be in many cases.

So:

• Handuknya kering.
  literally: The towel dry.
  natural English: The towel is dry.

In supaya cepat kering, kering describes the resulting state, and in English we often translate it with a verb:

• so that it dries quickly

So it is still basically an adjective, but it works very naturally in predicate-like positions.

Because Indonesian often leaves out pronouns when the meaning is already clear.

In English, you usually need:

• so that it dries quickly

In Indonesian, once the topic is already obvious (the wet towel), you can simply say:

• supaya cepat kering

The understood subject is the towel.

This kind of omission is very normal in Indonesian.

Yes, but the meaning and style are slightly different.

• handuk basah = wet towel
  This is the normal, compact noun phrase.
• handuk yang basah = the towel that is wet / the towel which is wet
  This sounds more explicit and a little heavier.

In most everyday cases, handuk basah is the better choice.

Use yang when you want a fuller descriptive phrase or extra emphasis.

Balkon is a borrowed word, ultimately from European languages, and it is a normal Indonesian word.

Indonesian has many loanwords, and balkon is one of them. Native English speakers often notice familiar-looking words like this.

Other common loanwords include:

• telepon
• kantor
• foto
• musik

So di balkon is completely natural Indonesian.

Yes. An active version would be something like:

• Saya menggantung handuk basah di balkon supaya cepat kering.
  = I hang the wet towel on the balcony so it dries quickly.

or

• Ibu menggantung handuk basah di balkon supaya cepat kering.
  = Mother hangs the wet towel on the balcony so it dries quickly.

The original passive version is preferred when:

• the doer does not matter
• the focus is on the towel
• the sentence is describing a situation rather than a person’s action

Both are grammatical, but they emphasize different things.

Yes, a little.

• Handuk basah digantung di balkon supaya cepat kering.
  = A/The wet towel is hung on the balcony so it dries quickly.
• Handuk basah itu digantung di balkon supaya cepat kering.
  = That wet towel / the wet towel is hung on the balcony so it dries quickly.

Itu makes the noun phrase more definite or points to a specific towel already known in the conversation.

Without itu, the sentence is still perfectly natural and often sounds more general or neutral.