اخي ما راح عالجامعة اليوم لان عنده وجع راس.

It is best understood as a mixed everyday written style.

Parts of it are very natural in Levantine, such as:

• ما راح = didn’t go
• عنده = he has
• وجع راس = headache

But some spellings look a bit more neutral or standard-ish, especially in writing. For example:

• اخي is written in a standard-looking way, even though many speakers would say something more colloquial like أخوي or خيي, depending on the region.
• لان is an informal spelling of لأن / لأنو / لانو

This kind of mixing is very common in chats, texts, and casual writing.

Because the -ي ending means my.

So:

• اخ = brother
• اخي = my brother

In more careful spelling, you may see أخي with a hamza. In casual writing, people often leave that out and write اخي.

Also, in actual Levantine speech, people often use other forms instead of the more standard-looking أخي, such as:

• أخوي
• خيي
• sometimes regional variants

So the writing here is understandable, but not necessarily the only way a native speaker would say it out loud.

Here, ما راح means didn’t go.

Breakdown:

• ما = negation
• راح = went

So:

• راح = he went
• ما راح = he didn’t go

This is a very common Levantine way to negate the past.

A very important point: راح can also be a future marker in Levantine, but only when it comes before another verb.

For example:

• راح يروح = he will go

But in your sentence, راح is standing alone, not followed by another verb, so it means went, not will.

عالجامعة is a contraction of:

• على
  • الجامعة
• عالجامعة

In Levantine writing, this is very common.

The part عالـ is pronounced roughly ʿal- and comes from على الـ.

Even though على literally often means on, in spoken Arabic it can also be used with places after motion verbs to mean something like to or to/at depending on context.

So here:

• راح عالجامعة = he went to the university

This is a very normal colloquial structure.

Yes, it could go somewhere else.

Arabic word order is often flexible, especially with time expressions like اليوم.

Your sentence says:

• اخي ما راح عالجامعة اليوم

But you could also hear:

• اخي اليوم ما راح عالجامعة
• اليوم اخي ما راح عالجامعة

All of these are possible. The choice depends on emphasis and style.

The version in your sentence sounds natural and straightforward.

لان means because.

In more careful spelling, you would usually see:

• لأن
• or in colloquial writing often لأنه / لأنو / لانو

In actual Levantine speech, many people say something like:

• لأنو
• لانو

So لان in your sentence is an informal written shortcut. It is understandable, but not the only possible spelling.

That is exactly the idea.

In Arabic, possession is often expressed through a structure like at someone rather than a separate verb like English to have.

So:

• عند = at
• عنده = at him

And in natural English, that becomes:

• he has

Examples:

• عندي كتاب = I have a book
• عندها سيارة = she has a car
• عنده وجع راس = he has a headache

In Levantine pronunciation, عنده is often said as ʿando.

Literally, it means:

• وجع = pain
• راس = head

So literally: head pain

In natural English, that is a headache.

Yes, وجع راس is a very common expression. It is basically the normal everyday way to say headache in Levantine.

You can think of it as a set phrase.

Because this is a common Arabic noun phrase pattern where the second noun does not need to be definite in the same way English would make it definite.

In everyday Levantine, وجع راس is just the normal expression for headache. Native speakers do not feel that it is missing anything.

Arabic often builds expressions through noun combinations rather than using a structure exactly like English.

So it is better to learn وجع راس as one chunk meaning headache, rather than trying to map it word-for-word too strictly.

Yes.

Arabic often allows both subject-first and verb-first order.

Your sentence is:

• اخي ما راح عالجامعة اليوم...

A verb-first version could be:

• ما راح اخي عالجامعة اليوم...

Both are possible, but they do not always feel exactly the same in emphasis.

• اخي ما راح... puts my brother up front as the topic.
• ما راح اخي... starts more directly with the action/result: my brother didn’t go...

In everyday Levantine, subject-first sentences are very common.

A broad Levantine-style pronunciation would be something like:

akhi / akhoy / khayye ma rāḥ ʿal-jāmʿa l-yōm la-anno ʿando wajaʿ rās

A few notes:

• عالجامعة is pronounced roughly ʿal-jāmʿa
• عنده is often pronounced ʿando
• لان would often sound more like la-anno or lanno
• وجع راس is roughly wajaʿ rās

The exact pronunciation depends a lot on whether the speaker is Syrian, Lebanese, Palestinian, or Jordanian, since Levantine has regional differences.