Baju terpakai itu masih baik.

A word-by-word breakdown is:

• baju = shirt, clothes, clothing
• terpakai = used, second-hand
• itu = that / those
• masih = still
• baik = good, fine, in good condition

So the whole sentence means something like:

• That used shirt is still good
• Those used clothes are still in good condition
• The used clothing is still good

The exact English translation depends on context, because baju can be understood a bit broadly.

Yes. In baju terpakai, terpakai means used in the sense of not new, second-hand, or previously worn/used.

So:

• baju terpakai = used clothes / second-hand clothing

This is a common expression.

A learner may notice that pakai means to wear / to use, so it makes sense that terpakai relates to something that has already been used.

One important note: in some other contexts, ter- can have other meanings, including an accidental sense. But in the fixed phrase baju terpakai, it simply means used / second-hand, not accidentally worn or anything strange like that.

In Malay, demonstratives like ini (this) and itu (that) usually come after the noun phrase, not before it as in English.

So Malay says:

• baju itu = that shirt / those clothes
• baju terpakai itu = that used shirt / those used clothes

The order is:

• noun + modifier(s) + demonstrative

So:

• baju = shirt/clothes
• baju terpakai = used shirt/clothes
• baju terpakai itu = that used shirt/those used clothes

This word order is very normal in Malay.

Malay often does not use a verb like English is/are in simple sentences with adjectives.

So:

• Baju itu baik literally looks like That shirt good
• but it means That shirt is good

Likewise:

• Baju terpakai itu masih baik = That used shirt is still good

This is completely normal Malay grammar. You do not need a separate word for is here.

Masih means still.

It shows that the condition continues up to now.

So:

• baik = good
• masih baik = still good

In this sentence, it means the used clothes/shirt are still in good condition, even though they have been worn before.

A useful pattern is:

• masih + adjective / verb

Examples:

• masih baik = still good
• masih baru = still new
• masih ada = still exists / is still there

Here, baik means good in the sense of in good condition.

That matters because baik can have several related meanings, such as:

• good
• fine
• kind
• well-behaved

But in Baju terpakai itu masih baik, it clearly refers to the condition of the clothing.

So a natural understanding is:

• still good
• still fine
• still in good condition

It could be either, depending on context.

Malay nouns often do not change form for singular vs. plural. So baju can mean:

• a shirt
• shirts
• clothes/clothing

That means Baju terpakai itu masih baik could refer to:

• one used shirt
• several used clothes
• a piece/set of used clothing

Context tells you which is meant.

If needed, Malay can show plurality in other ways, such as context, numbers, or reduplication:

• baju-baju = shirts / clothes

But in normal speech, Malay often leaves it unmarked if the meaning is already clear.

Yes, baju terpakai is natural and commonly understood as used clothes or second-hand clothes.

Depending on context, speakers might also say things like:

• baju lama = old clothes / an old shirt
• baju second-hand = second-hand clothes
• baju yang sudah dipakai = clothes that have already been worn

But these are not all exactly the same:

• baju terpakai focuses on used / second-hand
• baju lama focuses on old
• baju yang sudah dipakai is more explicit: clothes that have been worn

So the original phrase is perfectly natural.

Good question. Dipakai is the passive form of pakai, and it usually means is worn or is used in an event-like sense.

For example:

• Baju itu dipakai Ali = The shirt is worn by Ali
• Mesin ini dipakai setiap hari = This machine is used every day

But terpakai in baju terpakai works more like an adjective meaning used / second-hand.

So:

• baju dipakai would sound incomplete or would suggest an action/passive idea
• baju terpakai describes the clothing’s status or condition

That is why terpakai is the right choice here.

The structure is:

• Baju terpakai itu = subject noun phrase
• masih baik = predicate

More specifically:

• baju = noun
• terpakai = modifier describing the noun
• itu = demonstrative
• masih = adverb
• baik = adjective

So the sentence pattern is roughly:

• [Noun phrase] + [adverb + adjective]

That gives:

• Baju terpakai itu
  • masih baik

In English:

• That used shirt/clothing
  • is still good

Yes, in other contexts terpakai can have other shades of meaning, depending on how it is used.

For example, it can sometimes mean something like:

• gets used
• is usable
• ends up being used

But in the phrase baju terpakai, the intended meaning is very straightforward: used / second-hand clothing.

So for this sentence, the learner should understand it as a normal descriptive adjective, not worry too much about other possible uses.

A few natural translations are:

• That used shirt is still good.
• Those used clothes are still good.
• That second-hand clothing is still in good condition.
• The used clothes are still in good condition.

The best choice depends on context, especially how baju is being understood.

If you want a very natural translation that captures the idea well, That used clothing is still in good condition is a safe option.