Adik saya minum susu dingin dengan sedotan.

Adik means younger sibling. It does not tell you whether the person is male or female.

If you want to be specific, you can say:

• adik laki-laki = younger brother
• adik perempuan = younger sister

So Adik saya is simply my younger sibling.

In Indonesian, possessors usually come after the noun.

So:

• adik saya = my younger sibling
• rumah saya = my house
• buku saya = my book

This is different from English, where my comes before the noun.

Yes. Adik saya is normal and polite.

You can also say adikku, which also means my younger sibling. That form is a bit more personal or intimate.

Compare:

• adik saya = neutral, polite, common
• adikku = my younger sibling, more personal/literary/intimate

Both are correct.

Minum by itself is very common in everyday Indonesian and often means to drink.

Meminum also exists, but it sounds more formal or bookish in many contexts.

So in natural speech:

• Saya minum susu. = I drink / am drinking milk.

More formal:

• Saya meminum susu.

For learners, it is very useful to know that minum is the normal everyday choice.

Indonesian verbs do not usually change form for tense like English verbs do.

So minum can mean:

• drinks
• is drinking
• sometimes even drank

The exact time is understood from context or from time words such as:

• sekarang = now
• tadi = earlier
• kemarin = yesterday
• besok = tomorrow

Without extra context, Adik saya minum susu dingin dengan sedotan can naturally be understood as My younger sibling drinks / is drinking cold milk with a straw.

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

So:

• susu dingin = cold milk
• rumah besar = big house
• air panas = hot water

This is the normal word order:

• noun + adjective

It describes susu.

So:

• susu dingin = cold milk

The structure shows that dingin belongs with susu, not with minum.

A learner can think of the sentence in chunks:

• Adik saya = my younger sibling
• minum
• susu dingin = cold milk
• dengan sedotan = with a straw

Yes. Here dengan means with / using.

So:

• dengan sedotan = with a straw / using a straw

In Indonesian, dengan often introduces:

• a tool or instrument
• a manner
• accompaniment, depending on context

Here it is clearly an instrument: the younger sibling drinks by using a straw.

Yes, it can.

For example:

• Saya pergi dengan teman saya. = I went with my friend.

But in minum susu dingin dengan sedotan, the meaning is using a straw, not together with a straw. The context makes that clear.

Indonesian usually does not use articles like English a or the.

So:

• susu can mean milk, some milk, or the milk, depending on context
• sedotan can mean a straw or the straw, depending on context

If a speaker wants to be more specific, they can add other words, but in a normal sentence this is often unnecessary.

Yes. Susu dingin is a natural way to say milk that is cold or chilled.

It does not have to mean extremely cold. It simply means the milk is not warm.

Yes. Sedotan is the standard everyday word for a drinking straw.

So:

• minum dengan sedotan = drink with a straw

It is a very common word in daily Indonesian.

Yes. Indonesian often leaves gender unspecified unless it matters.

So Adik saya could be:

• my younger brother
• my younger sister
• my younger sibling

English often forces you to choose, but Indonesian does not.

You can, but the meaning changes.

• Adik saya = my younger sibling
• Adik by itself = younger sibling or sometimes a form of address for someone younger

So if you remove saya, you are no longer clearly saying my younger sibling.