النقاش بيسنفر الجبس.

A common Cairene-style pronunciation is en-naʔʔaash biyesanfar el-gibs.

A few helpful details:

• النقاش → en-naʔʔaash
• بيسنفر → biyesanfar
• الجبس → el-gibs

Notes:

• The ʔ stands for a glottal stop, like the catch in the middle of uh-oh.
• In Egyptian Arabic, ج is usually pronounced like g in go, so الجبس starts with g, not j.
• In many Egyptian accents, ق is pronounced as a glottal stop ʔ.

Because ن is a sun letter.

In Arabic, the definite article is written الـ, but before sun letters, the l sound assimilates to the first consonant of the word. So:

• written: النقاش
• said: en-naʔʔaash

The spelling stays the same, but the pronunciation changes.

By contrast, الجبس keeps the l sound because ج is a moon letter, so you say el-gibs, not eg-gibs.

Here it means the painter/decorator.

This is a very common point of confusion because Arabic writing often leaves out short vowels, and everyday writing may also leave out the shadda mark. So النقاش can look identical on the page in different meanings.

In this sentence, the intended word is basically النقّاش:

• نقّاش = painter/decorator, especially someone who works on walls, paint, finishing, etc.
• نقاش = discussion/debate

Context tells you which one is meant. Since the sentence is about sanding plaster, painter/decorator is the correct reading.

In Egyptian Arabic, بـ is the normal marker for the present tense in ordinary statements.

So:

• بيسنفر = he sands / he is sanding

This بـ is extremely common in Egyptian Arabic. It is one of the clearest signs that the sentence is colloquial Egyptian rather than Standard Arabic.

Yes.

In Egyptian Arabic, the present form with بـ can cover both:

• a habitual meaning: he sands
• an ongoing meaning: he is sanding

The exact meaning depends on context.

So النقاش بيسنفر الجبس could mean either:

• the painter sands the plaster
• the painter is sanding the plaster

If you need to make the timing clearer, you can add time words such as دلوقتي for now.

It is third person masculine singular present.

Why?

• third person = he
• masculine singular = because النقاش is a singular masculine noun
• present = marked by بـ

So the sentence structure is:

• النقاش = the painter/decorator
• بيسنفر = he sands / is sanding
• الجبس = the plaster

In other words, the verb agrees with the subject النقاش.

Because Arabic does not normally use a separate present-tense verb to be in sentences like this.

English needs is sanding, but Egyptian Arabic does not need a separate word for is. The verb بيسنفر already carries the present meaning.

So Arabic says, literally:

• the painter sanding the plaster

But in natural English, that becomes:

• the painter is sanding the plaster

Here الجبس means gypsum/plaster, especially as a building material.

Depending on context, جبس can refer to:

• gypsum
• plaster
• plaster coating on a wall or ceiling

In construction and finishing contexts, translating it as plaster is often the most natural choice.

Because in Egyptian Arabic, the letter ج is usually pronounced g.

So:

• الجبس → el-gibs

A learner who knows Standard Arabic may expect j, but Egyptian pronunciation is different here. This is one of the most recognizable features of Egyptian Arabic.

Yes, very normal.

النقاش بيسنفر الجبس follows a common Egyptian pattern:

• subject + verb + object

That is a very natural order in spoken Egyptian Arabic.

Egyptian often uses subject-first word order more comfortably than Standard Arabic does, so this sentence sounds straightforward and conversational.