Dia melonggarkan pakaian itu.

Yes. This sentence uses the common Subject–Verb–Object order:

• Dia = subject
• melonggarkan = verb
• pakaian itu = object

So it is a very standard sentence pattern.

Longgar is basically an adjective meaning loose.

• baju longgar = a loose shirt

Melonggarkan is a verb meaning to loosen or to make something loose/looser.

• Dia melonggarkan pakaian itu = He/She loosened the clothing

So longgar describes a state, while melonggarkan describes an action that causes that state.

It comes from the base word longgar.

A simple way to see it is:

• longgar = loose
• meN- ... -kan
  • longgar → melonggarkan

This creates a transitive verb meaning to loosen something or to make something looser.

Because the meN- prefix changes shape depending on the first sound of the root word. With roots beginning with l, the prefix appears as me-, so:

• longgar → melonggarkan

This kind of change is very common in Malay verb formation.

Here, -kan helps make the verb causative/transitive. In other words, it shows that someone is causing something to become loose.

So:

• longgar = loose
• melonggarkan = to loosen something / to make something loose

It tells you the action is being done to an object.

It can mean either, depending on context. Malay nouns usually do not have to show singular or plural the way English does.

So pakaian can be translated as:

• clothing
• clothes
• sometimes a garment or an outfit

In this sentence, English might translate it differently depending on context, but the Malay form itself does not force a singular/plural choice.

In Malay, demonstratives like ini and itu normally come after the noun:

• pakaian ini = this clothing / these clothes
• pakaian itu = that clothing / those clothes

This is different from English, where this and that come before the noun.

Its basic meaning is that, but in natural translation it can sometimes feel like the if the speaker is referring to a specific known thing.

So pakaian itu may be understood as:

• that clothing
• those clothes
• sometimes simply the clothing / the clothes

The exact English wording depends on context.

No. Pakaian itu just means that/the clothing. It does not say whether the clothing belongs to dia or to someone else.

If you wanted to show possession more clearly, you might see forms like:

• pakaiannya = his/her clothing
• pakaian dia = his/her clothing

But the given sentence leaves ownership unstated.

A helpful approximation is:

meh-long-GAR-kan

Broken into syllables:

• me
• long
• gar
• kan

The ngg part is pronounced like ng followed by a hard g sound.

A formal passive version would be:

Pakaian itu dilonggarkan olehnya.

A very common less-formal Malay pattern is:

Pakaian itu dia longgarkan.

Both mean that the clothing was loosened by him/her, but the second pattern is especially common in everyday usage.