الاجتماع قصير اليوم.

A common Levantine-style pronunciation is roughly:

il-ijtimāʿ ʔaṣīr il-yōm

A few helpful notes:

• الـ is often pronounced il- or el- in Levantine.
• In many Levantine accents, ق in قصير is pronounced as a glottal stop ʔ rather than q.
• A more formal or MSA-like pronunciation would be al-ijtimāʿ qaṣīr al-yawm.

Because Arabic usually leaves out the verb to be in the present tense.

So:

• الاجتماع قصير اليوم = The meeting is short today

There is no separate word for is here.

But in the past or future, Arabic does use a verb such as كان:

• الاجتماع كان قصير = The meeting was short

Because الاجتماع is the subject, and قصير is the predicate adjective.

In Arabic, when an adjective is the predicate in a sentence like this, it is usually indefinite:

• الاجتماع قصير = The meeting is short

But if the adjective directly modifies the noun, then both usually match in definiteness:

• الاجتماع القصير = the short meeting

That is an important difference.

Yes. This is a very normal order:

• الاجتماع = the meeting
• قصير = short
• اليوم = today

So the structure is basically:

subject + predicate + time expression

You may also hear:

• الاجتماع اليوم قصير

This is also natural and may sound a bit smoother in some contexts. The meaning is the same.

Here اليوم is being used as a time expression meaning today.

In Arabic, words for time often appear without a preposition:

• اليوم = today
• بكرا = tomorrow
• هلق = now

So الاجتماع قصير اليوم is completely normal. You do not need في here.

It is very understandable in Levantine, but it sounds somewhat neutral/formal because of the word الاجتماع.

In everyday spoken Levantine, people may still say it, especially in work or school contexts, but the pronunciation will be more colloquial.

So you can think of it as:

• good and correct
• natural enough in Levantine
• slightly closer to formal/standard vocabulary than very casual street speech

Because it agrees with الاجتماع, which is a masculine singular noun.

So:

• الاجتماع قصير = masculine singular

If the noun were feminine, the adjective would change:

• المحاضرة قصيرة اليوم = The lecture is short today

Agreement is very important in Arabic.

It can mean both.

So قصير can describe:

• physical length: a short table
• duration: a short meeting

In this sentence, it means brief or short in duration.

Not in Levantine.

In normal spoken Levantine, you do not use case endings, so:

• الاجتماع قصير اليوم

is exactly what you want.

In full formal Standard Arabic, case endings could be added, but learners of Levantine do not need them for everyday speech.

A common Levantine negative version is:

الاجتماع مش قصير اليوم

This means:

The meeting is not short today

In Levantine, مش is very commonly used to negate sentences like this.