وسع الهدوم بعد البروفة.

It is the imperative (command) form of وسّع in Egyptian Arabic.

In this sentence, وسع means something like make wider, loosen, or let out, depending on the context you were given.

A few useful forms:

• وسع — say it to one man
• وسّعي — say it to one woman
• وسّعوا — say it to more than one person

So the sentence is addressing someone directly.

In writing, Arabic often leaves this to context.

The form وسع can look the same as:

• he widened / he made wider and
• widen! / make wider!

Here, it is understood as a command because of the sentence structure and context:

• there is no stated subject like هو
• the sentence sounds like an instruction
• the rest of the sentence gives a time phrase: after the rehearsal/fitting

In speech, intonation also helps make it clear.

الهدوم means the clothes.

It is a very common Egyptian colloquial word. A learner will hear it all the time in everyday speech.

Compare:

• هدوم — everyday Egyptian Arabic
• ملابس — more formal / MSA-style clothes

So if you are aiming for natural Egyptian speech, هدوم is exactly the kind of word you want to know.

Because it refers to specific clothes, not just clothes in general.

So:

• هدوم = clothes
• الهدوم = the clothes

In a real situation, these would usually be clothes already known from context, such as:

• the costume
• the outfit
• the clothes being altered

بعد means after.

So بعد البروفة is a time expression meaning after the rehearsal / after the fitting, depending on the context.

Structure:

• بعد = after
• البروفة = the rehearsal / the fitting

Together, this phrase tells you when the action should happen.

بروفة is a borrowed word in Egyptian Arabic.

It is commonly used for things like:

• a rehearsal
• a fitting / try-on, especially in clothing contexts

So this is one of those words where context matters a lot. In your sentence, the intended meaning is the one already given to you, but it is useful to know that بروفة can have more than one everyday meaning in Egyptian speech.

This is very normal Egyptian Arabic word order for a command:

• verb: وسع
• object: الهدوم
• time phrase: بعد البروفة

So it is basically:

[Do the action] + [to what] + [when]

That order sounds natural and straightforward in spoken Egyptian.

You could also move the time phrase for emphasis, for example:

• بعد البروفة وسّع الهدوم

But the original order is very normal.

A simple pronunciation guide is:

wassaʿ il-hudūm baʿd il-borova

Notes:

• وسع = wassaʿ
  The last sound is ع, which does not exist in English.
• الهدوم = il-hudūm
• بعد = baʿd
• البروفة = il-borova or sometimes close to il-brova in fast speech

Also, the الـ in الهدوم and البروفة is pronounced clearly here, because ه and ب are not sun letters.

Yes. In an Arabic command, the subject you is usually understood and not said explicitly.

So وسع الهدوم already means:

• You, make the clothes wider
• You, let out the clothes

You normally do not need to add a separate word for you unless you want special emphasis.

Yes, it can sound natural, especially in a context involving:

• tailoring
• costumes
• stage clothes
• a rehearsal or fitting

The vocabulary is quite colloquial:

• الهدوم is very everyday Egyptian
• بروفة is also very common in speech

So overall, this sounds like a practical spoken instruction, not a formal written sentence.