الموعد يوم الاربع.

A natural Egyptian-style pronunciation is roughly:

el-mawʿed yōm el-arbaʿ

A few notes:

• الموعد → el-mawʿed
  This means the appointment or the scheduled time.
• يوم → yōm
  This means day, but here it works like on.
• الاربع → el-arbaʿ
  This is the Egyptian colloquial way of saying Wednesday.

The hardest sound for many English speakers is ع in mawʿed and arbaʿ. If you cannot say it perfectly yet, that is normal.

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

So:

• الموعد يوم الاربع literally looks like the appointment Wednesday day
• but the natural English meaning is The appointment is on Wednesday

This kind of sentence is very common in Arabic. The is is understood automatically.

الموعد means the appointment, the meeting time, or the scheduled time, depending on context.

In this sentence, it most naturally means:

• the appointment
• or the date/time of the meeting

A learner should know that in everyday Egyptian, people also very often use ميعاد for appointment. So you may hear:

• الميعاد يوم الأربع

That is very natural in spoken Egyptian too.

Yes, يوم literally means day, but in this sentence it helps express time, like on in English.

So:

• يوم الاربع = on Wednesday
  literally: day Wednesday

This is a very normal Arabic way to talk about days.

Usually, no. That would sound incomplete or unnatural.

To say on Wednesday, Arabic normally uses:

• يوم الأربع
• or in more standard writing, يوم الأربعاء

So يوم is important here.

Because الاربع is a colloquial Egyptian form of Wednesday, while الأربعاء is the full Standard Arabic form.

So:

• الأربعاء = Standard Arabic
• الأربع / الاربع = Egyptian colloquial

In everyday Egyptian speech, shortening weekday names like this is very common.

In informal writing, many Arabic speakers leave out some hamzas, especially in everyday texting or casual writing.

So you may see:

• الاربع
• الأربع

Both may refer to the same colloquial word here.

If you want a more careful standard spelling for Wednesday, write:

• الأربعاء

In Arabic, the days of the week are normally used with الـ.

For example:

• السبت = Saturday
• الأحد = Sunday
• الاثنين = Monday
• الثلاث or الثلاثاء
• الأربع or الأربعاء

So الـ here is normal. You should expect to see it with weekday names.

It is best described as Egyptian-friendly / mixed everyday Arabic.

Why:

• الموعد is widely understood and can sound a bit more neutral or formal
• الاربع is clearly colloquial Egyptian-style wording

A fully standard version would be:

• الموعد يوم الأربعاء

A very natural Egyptian spoken version could be:

• المعاد يوم الأربع
• or الموعد يوم الأربع

So the original sentence is absolutely understandable, and it sounds close to natural Egyptian usage.