Air liur saya sedikit.

Yes. Air liur is a fixed expression meaning saliva or spit.

Literally:

• air = water
• liur = saliva/drool

But in real usage, learners should understand air liur as a single noun phrase meaning saliva. You usually should not translate it word-for-word as water drool or anything similar.

Depending on context, it can refer to:

• saliva inside the mouth
• drool
• sometimes spit

In this sentence, it most naturally means saliva.

Because Indonesian often shows possession by putting the thing first and the possessor after it.

So:

• air liur saya = my saliva
• literally, something like saliva my

This is very normal Indonesian word order.

Other examples:

• buku saya = my book
• rumah saya = my house
• nama saya = my name

So air liur saya is the standard way to say my saliva.

Indonesian often does not use a verb like is/am/are in simple statements of description.

So:

• Air liur saya sedikit.
• literally: My saliva little.

Natural English adds a verb:

• My saliva is a little.
• or more naturally: I have little saliva / My saliva is قليل in amount (in English: My saliva is low / I don't have much saliva)

Indonesian also often expresses ideas that English would use have for without a separate word meaning have.

So this one sentence can correspond to English ideas like:

• My saliva is little.
• I have little saliva.
• I don't have much saliva.

Here, sedikit means a little, not much, or small in amount.

It is describing the amount of saliva.

Compare:

• Air liur saya sedikit. = My saliva is little / I don't have much saliva.
• Air liur saya banyak. = I have a lot of saliva.

So sedikit is about quantity, not about size.

Here it works like a predicate describing amount, so the easiest way to think of it is as an adjectival quantity word: little / few / not much.

In Indonesian, words like sedikit can behave flexibly depending on context.

For example:

• Saya makan sedikit. = I eat a little.
  Here it feels adverb-like in English.
• Uangnya sedikit. = The money is little / There isn't much money.
  Here it feels more adjective-like.

In Air liur saya sedikit, sedikit is describing the quantity of air liur saya.

No, not in normal usage.

• Air liur saya sedikit. = My saliva is little / I don't have much saliva.
  This is a full sentence.

But sedikit air liur saya is just a noun phrase, something like:

• a little of my saliva
• some of my saliva

So the word order changes the structure:

• air liur saya sedikit → complete statement
• sedikit air liur saya → noun phrase, not a normal standalone sentence for this meaning

It is understandable, but by itself it can sound a bit unusual unless there is a clear context, such as talking about dry mouth, dehydration, or a medical issue.

A native speaker might more naturally say things like:

• Mulut saya kering. = My mouth is dry.
• Saya kekurangan air liur. = I have too little saliva / I lack saliva.
• Air liur saya sedikit sekali. = My saliva is very little.

So Air liur saya sedikit is grammatically fine, but in everyday conversation people may choose a more natural or more specific expression depending on what they mean.

Yes, if the situation is informal.

• air liur saya sedikit = neutral / polite / standard
• air liurku sedikit = informal, more personal
• air liur aku sedikit = possible in colloquial speech, though air liurku is often smoother

In general:

• saya = neutral, polite, standard
• aku = informal
• -ku = possessive suffix meaning my

So these can all express roughly the same idea, but with different levels of formality.

Air liur is usually treated like a mass noun, similar to water or milk in English. You normally talk about amount, not number.

That is why sedikit works well:

• air liur saya sedikit = I have little saliva
• air liur saya banyak = I have a lot of saliva

Using a number would usually require a unit:

• satu tetes air liur = one drop of saliva

So sedikit is the natural choice when talking about an uncountable substance like saliva.

The pattern is:

noun phrase + description

More specifically:

• air liur saya = the subject/topic: my saliva
• sedikit = the predicate/description: little in amount

So the structure is:

Air liur saya + sedikit
My saliva + is little

This kind of pattern is very common in Indonesian:

• Rumah saya besar. = My house is big.
• Uang saya sedikit. = I have little money.
• Waktu saya sedikit. = I have little time.

So this sentence follows a very common Indonesian pattern.