الشباك نظيف، بس الباب وسخ.

In Levantine Arabic, you usually do not say a word for is/am/are in the present tense when the sentence is something like noun + adjective.

So:

• الشباك نظيف = the window is clean
• الباب وسخ = the door is dirty

Literally, it looks more like the window clean, but the door dirty.

If you want past or future, then you do use a verb:

• الشباك كان نظيف = the window was clean
• الشباك رح يكون نظيف = the window will be clean

Here, بس means but.

That is very common in Levantine. So:

• الشباك نظيف، بس الباب وسخ = the window is clean, but the door is dirty

You are also right that بس can mean other things depending on context, such as:

• only / just
• enough / stop

So context matters. In this sentence, because it connects two contrasting statements, it clearly means but.

A more formal word for but is لكن, but in everyday Levantine, بس is much more common.

Because Arabic normally puts adjectives and descriptive words after the noun, not before it like English often does.

So Arabic says:

• الشباك نظيف = literally the window clean
• الباب وسخ = literally the door dirty

This is normal word order.

In this sentence, نظيف and وسخ are not just adjectives inside a noun phrase; they are the predicate of the sentence, telling you what the subject is like.

Because here they are predicate adjectives, not part of a phrase like the clean window.

Compare these two:

• الشباك نظيف = the window is clean
• الشباك النظيف = the clean window

That difference is very important.

So:

• without ال after the noun: it usually means is clean / is dirty
• with ال after the noun: it usually means the clean ... / the dirty ...

That is why the sentence has:

• الشباك نظيف
• الباب وسخ

and not الشباك النظيف or الباب الوسخ.

Because ش is a sun letter.

With sun letters, the ل in الـ is not pronounced separately; it blends into the next consonant. So الشباك is pronounced roughly like:

• ish-shibbāk
• esh-shebbāk

depending on region

So the l sound disappears, and you hear a doubled sh sound.

By contrast, الباب begins with ب, which is a moon letter, so the ل stays audible:

• il-bāb
• el-bāb

again depending on region

Yes. شباك is the normal everyday Levantine word for window.

نافذة is correct Arabic too, but it sounds more like:

• MSA
• formal speech
• writing
• school-style vocabulary

In everyday Levantine conversation, people are much more likely to say شباك.

A common rough pronunciation is:

• نظيف → nḍīf or sometimes nzīf, depending on the area
• وسخ → wésikh or wesekh

So the whole sentence might sound something like:

• ish-shibbāk nḍīf, bas il-bāb wésikh

Regional pronunciation varies across the Levant, so don’t worry if you hear small differences.

Also, the spelling usually stays نظيف even if the spoken pronunciation shifts a bit.

Yes, they change to match the noun.

Here, both شباك and باب are masculine singular, so the masculine singular adjective forms are used:

• نظيف
• وسخ

If the noun is feminine, the adjective usually takes ـة:

• الطاولة نظيفة = the table is clean
• السيارة وسخة = the car is dirty

So agreement matters in Arabic.

No, not in a simple sentence like this.

You normally just say:

• الشباك نظيف
• الباب وسخ

That already means:

• the window is clean
• the door is dirty

For a beginner, adding هو here is usually unnecessary and may sound unnatural or overly emphatic.

It is a normal everyday word meaning dirty.

It is completely fine for things like:

• doors
• clothes
• hands
• rooms
• floors

So الباب وسخ is a perfectly ordinary sentence.

However, if you use وسخ about a person, it can sound stronger or insulting depending on context, because it may suggest more than just physical dirt.

You would make the adjective definite too:

• الشباك النظيف = the clean window
• الباب الوسخ = the dirty door

So compare:

• الشباك نظيف = the window is clean
• الشباك النظيف = the clean window

This is one of the most important contrasts for learners to notice.