من كتر التشطيب، المقاول مشغول.

من كتر is a very common Egyptian Arabic expression meaning because of so much..., from the sheer amount of..., or due to all the....

So in this sentence, it introduces the cause of the contractor being busy.

A good way to feel it is:

• من كتر الشغل = because of all the work
• من كتر الزحمة = because of all the traffic / crowding
• من كتر التشطيب = because of all the finishing work

It is a bit more expressive than a plain because of.

In this expression, Egyptian Arabic uses كتر as part of the fixed phrase من كتر...

It is related to the idea of a lot / abundance / muchness, and it is connected historically to words like:

• كتير = a lot / many
• كثرة in Standard Arabic = abundance

So you should learn من كتر as one chunk with the meaning because of so much...

You would normally say:

• من كتر الحر = because of the heat
• من كتر الناس = because of all the people

not من كتير in this structure.

In Egyptian Arabic, التشطيب usually refers to finishing work, especially in construction and apartments.

It can include things like:

• painting
• flooring
• plastering
• installing fixtures
• final touches before a place is ready

So this is a very natural word if you are talking about buildings, renovations, apartments, or contractors.

Because Arabic usually does not use a present-tense verb meaning is/am/are in sentences like this.

So:

• المقاول مشغول = the contractor is busy
• أنا تعبان = I am tired
• هي جاهزة = she is ready

This kind of sentence is called a nominal sentence: a subject followed by a description.

If you want past or future, then Arabic does use verbs:

• المقاول كان مشغول = the contractor was busy
• المقاول هيبقى مشغول = the contractor will be busy

مشغول means busy or occupied.

Here it agrees with المقاول, which is masculine singular, so مشغول is also masculine singular.

Other forms would be:

• مشغولة = feminine singular
• مشغولين = plural / masculine plural in many everyday contexts
• مشغولات or other patterns may appear in more formal or specific contexts, but learners most often need مشغول / مشغولة / مشغولين

Examples:

• المهندسة مشغولة = the female engineer is busy
• العمال مشغولين = the workers are busy

Because both nouns are being used as definite nouns:

• التشطيب = the finishing work / finishing as a known activity in context
• المقاول = the contractor

In Arabic, abstract or category-like nouns are often definite when talking about something understood from context.

So التشطيب here does not have to mean one single specific finishing task; it can mean the finishing work in a general-but-understood sense.

And المقاول is probably a specific contractor already known in the conversation.

Arabic allows this kind of fronting for emphasis.

Starting with من كتر التشطيب puts the focus first on the reason:

• من كتر التشطيب، المقاول مشغول = Because of all the finishing work, the contractor is busy.

You could also say:

• المقاول مشغول من كتر التشطيب

That is also natural, but it feels a little more straightforward and less focused on the cause.

So the version you were given highlights the reason first.

A rough Egyptian pronunciation is:

men ketr et-tashṭīb, el-moʔāwel mashghūl

A few useful notes:

• من is often pronounced men
• التشطيب is pronounced et-tashṭīb, not el-tashṭīb
• المقاول is often pronounced something like el-moʔāwel in Cairo-style speech, where ق becomes a glottal stop
• مشغول sounds like mashghūl

Transliterations vary, so do not worry if you see slightly different spellings in English letters.

Because ت is a sun letter.

With the Arabic definite article الـ, the ل sound disappears before sun letters and the next consonant is doubled.

So:

• التشطيب is written with الـ
• but pronounced et-tashṭīb

By contrast, م in المقاول is a moon letter, so the ل is pronounced:

• المقاول → el-moʔāwel

This is a very common pronunciation rule in Arabic and worth learning early.

This sentence is clearly Egyptian colloquial in style.

The main colloquial feature is من كتر.

In Standard Arabic, you would more likely say something like:

• بسبب كثرة التشطيبات، المقاول مشغول
• بسبب كثرة أعمال التشطيب، المقاول مشغول

An Arabic speaker from another country would probably understand the Egyptian sentence, especially from context, but من كتر sounds colloquial rather than formal.

Yes, but the nuance changes.

• علشان التشطيب = because of the finishing work
• من كتر التشطيب = because of all the finishing work / because there is so much finishing work

So من كتر emphasizes quantity or intensity.

Compare:

• المقاول مشغول علشان التشطيب = the contractor is busy because of the finishing work
• المقاول مشغول من كتر التشطيب = the contractor is busy because there is so much finishing work

Both are natural, but من كتر is more expressive and closer to because of how much...