Saya kesejukan selepas kehujanan dalam perjalanan pulang.

In this sentence, kesejukan means feeling cold or being chilled.

It comes from the root sejuk = cold/cool.
With the circumfix ke-...-an, it often means that someone is affected by that condition, often in an unwanted way.

So:

• sejuk = cold
• kesejukan = to be suffering from the cold / to feel very cold

This is stronger and more situational than just saying something is cold.

Kehujanan means to get caught in the rain or to be rained on.

It comes from:

• hujan = rain
• kehujanan = affected by rain, usually accidentally or unpleasantly

So selepas kehujanan means after getting caught in the rain.

This is a very useful pattern in Malay.

The circumfix ke-...-an can show that someone is affected by something, often in a way that is involuntary, uncomfortable, or accidental.

In this sentence:

• kesejukan = affected by cold
• kehujanan = affected by rain

This pattern is common in everyday Malay. For example:

• kelaparan = hungry, suffering from hunger
• kehausan = thirsty, suffering from thirst
• kepanasan = too hot, feeling overheated

So the sentence has a very natural internal logic:
I was cold after getting rained on.

In this sentence, it works like a predicate, which English speakers may interpret as something between an adjective and a verb.

Malay does not always divide words the same way English does. A word like kesejukan can often be translated naturally with an English verbal phrase such as:

• was cold
• felt cold
• got chilled

So even if the form looks noun-like to an English learner, in the sentence Saya kesejukan, it behaves like the main predicate: I felt cold.

Because Malay often leaves out repeated subjects when they are already clear from context.

So:

• Saya kesejukan selepas kehujanan

  naturally means:

• I felt cold after I got caught in the rain

The subject of kehujanan is understood to be the same saya from the first part.

You could say selepas saya kehujanan, but it is often unnecessary.

Selepas means after.

It marks what happened first:

1. kehujanan = got caught in the rain
2. kesejukan = then felt cold

So selepas gives the sentence a time sequence.

It does not directly mean because, although the cause is clearly implied.
If you used kerana, the focus would be more directly on reason:

• Saya kesejukan kerana kehujanan
  = I felt cold because I got caught in the rain

The original sentence focuses more on what happened after what.

Dalam perjalanan pulang means on the way home.

Breakdown:

• dalam = in
• perjalanan = journey / trip / travel
• pulang = return home / go home

So literally it is something like in the journey home, but natural English is on the way home.

Both pulang and balik can often be translated as go back or return, and both can be used in the context of going home.

But there is a slight difference:

• pulang often specifically suggests returning home
• balik is broader and can mean go back / return in many contexts

So perjalanan pulang sounds neat and natural for the journey home.

You may also hear very common everyday speech like:

• dalam perjalanan balik

That is also natural in conversation.

Most naturally, it tells you the situation in which the rain incident happened: the speaker got caught in the rain while on the way home.

In practice, though, it can feel connected to the whole event:

• while going home
• got caught in the rain
• then felt cold

So the phrase mainly gives the setting for the event, especially kehujanan.

Yes, Malay word order is somewhat flexible, though different orders can slightly change the focus.

For example:

• Saya kesejukan selepas kehujanan dalam perjalanan pulang.
• Saya kesejukan dalam perjalanan pulang selepas kehujanan.

Both are understandable, but the original sounds smoother because it keeps selepas kehujanan together as one idea: after getting caught in the rain.

Then dalam perjalanan pulang adds the setting.

They are related, but not identical.

• Saya sejuk = I am cold
  This is understandable and common in speech, but it can sound a little plain or colloquial.

• Saya berasa sejuk = I feel cold
  This is straightforward and neutral.

• Saya kesejukan = I am feeling cold / I am chilled / I am suffering from the cold
  This often suggests being affected by cold because of circumstances.

So kesejukan adds a stronger sense of being unpleasantly affected.

Not necessarily.

It clearly means the speaker felt cold after getting rained on.
That may suggest discomfort and could imply a risk of getting sick, but the sentence itself does not say that the speaker actually became ill.

It only states the immediate result: feeling cold.

A very literal breakdown would be something like:

• Saya = I
• kesejukan = was affected by cold / felt chilled
• selepas = after
• kehujanan = getting rained on / being caught in the rain
• dalam perjalanan pulang = on the journey home

A natural English translation would be:

• I felt cold after getting caught in the rain on the way home.

That is much better English than a fully word-for-word translation.