Asupan air Nenek cukup.

Asupan means intake or consumption, especially in a health, nutrition, or medical context.

So asupan air means water intake.

This is a fairly formal word. In casual speech, people might talk more simply about how much someone drinks.

Yes. Indonesian air means water, not the English word air.

This is a very common false friend for English speakers.

• air = water
• udara = air

So asupan air Nenek is about Grandma’s water intake, not anything involving the air she breathes.

In Indonesian, possession is often shown just by putting the owner after the thing owned.

So:

• asupan air = water intake
• Nenek = Grandma / grandmother

Together:

• asupan air Nenek = Grandma’s water intake

This is different from English, where the possessor often comes first with ’s.

A very literal word-for-word pattern is:

• water intake + Grandma

but natural English is:

• Grandma’s water intake

Indonesian often does not use a copula like English is / am / are in simple sentences.

So:

• Asupan air Nenek cukup.
  literally: Grandma’s water intake sufficient.

Natural English adds is:

• Grandma’s water intake is sufficient.

This is completely normal in Indonesian.

Here, cukup means enough or sufficient.

So the sentence means that Grandma’s water intake is adequate.

In this sentence, cukup works as the predicate of the sentence:

• Asupan air Nenek = the topic / subject
• cukup = enough / sufficient

You may also see cukup in other contexts meaning things like:

• quite
• fairly
• enough

But here the meaning is clearly sufficient.

Nenek is capitalized if it is being used like a name or a direct family title, similar to English Grandma.

So:

• Asupan air Nenek cukup. = Grandma’s water intake is sufficient.

If you were speaking more generally about a grandmother, you would usually write it lowercase:

• Asupan air nenek itu cukup. = That grandmother’s water intake is sufficient.

So capitalization can show whether it means:

• Grandma as a family title, or
• grandmother in a general sense

Yes, it is grammatical and understandable, especially in a formal, health-related, or caregiving context.

It sounds a bit more clinical or written than everyday casual conversation because of asupan.

A more conversational version might be something like:

• Nenek minumnya sudah cukup. = Grandma is drinking enough.
• Nenek sudah cukup minum air. = Grandma has drunk enough water.

So your sentence is natural, but it leans a little formal.

The given order is the most natural:

• Asupan air Nenek cukup.

You can also say:

• Asupan air Nenek sudah cukup.

Adding sudah makes it feel a bit more natural in many contexts, like is already sufficient or simply is sufficient now.

Putting cukup at the front would usually sound unnatural here.

In Indonesian, asupan air normally refers to water intake, especially in a health or nutrition sense. In practical terms, this usually means the amount of water someone takes into the body, especially by drinking.

Depending on context, English could translate it as:

• water intake
• fluid intake if the broader context includes other liquids

But with just air, the basic meaning is specifically water.

Yes. Indonesian does not use articles the way English does.

So there is no separate word corresponding to:

• the
• a
• an

Whether English translation needs the or not depends on context.

For example:

• Asupan air Nenek cukup.
  could be understood in English as
• Grandma’s water intake is sufficient.

No article is needed before Grandma’s, but in other sentences English might require one even though Indonesian does not.

Yes. That is a perfectly good translation.

Both of these work:

• Grandma’s water intake is enough.
• Grandma’s water intake is sufficient.

The difference is just style:

• enough = more everyday
• sufficient = a bit more formal

Since asupan is somewhat formal, sufficient matches the tone nicely.