القميص المكرمش محتاج المكواة.

Because this is a present-tense nominal sentence in Arabic. In Egyptian Arabic, you usually do not say a separate word for is / am / are in the present.

So:

• القميص المكرمش = the wrinkled shirt
• محتاج المكواة = needs the iron / needs ironing

Together: The wrinkled shirt is in need of the iron.

If you wanted was, you would add كان:

• القميص المكرمش كان محتاج المكواة = The wrinkled shirt needed the iron / needed ironing

Because in Arabic, adjectives normally come after the noun they describe.

So:

• القميص = the shirt
• المكرمش = the wrinkled

Together:

• القميص المكرمش = the wrinkled shirt

This is the normal order in both Egyptian Arabic and Standard Arabic.

Because Arabic adjectives usually match the noun in definiteness.

Here, القميص is definite: the shirt.
So the adjective must also be definite: the wrinkled.

That is why you get:

• قميص مكرمش = a wrinkled shirt
• القميص المكرمش = the wrinkled shirt

This matching is very important in Arabic.

المكرمش means something like wrinkled, crumpled, or creased.

It comes from the Egyptian Arabic verb كرمش, which means to wrinkle / crumple / scrunch up.

So مكرمش is describing the shirt as being in a wrinkled or crumpled state.

A learner may also notice that this is a very natural Egyptian colloquial kind of word. In more formal Arabic, you might see other words for wrinkled depending on context.

In Egyptian Arabic, محتاج is extremely common for expressing need.

Literally, محتاج means needing or in need of, but in everyday speech it often works like needs in English.

So:

• القميص محتاج المكواة
  = literally The shirt is needing the iron = naturally The shirt needs the iron / needs ironing

This is a very normal Egyptian way to speak.

Using المكواة here is natural because Arabic often uses the definite article where English might use a more general expression.

So محتاج المكواة literally looks like needs the iron, but the meaning is often more general:

• needs ironing
• needs the iron

It does not always mean one specific iron in a highly literal sense. Arabic often uses the in places where English would be less definite.

It can be understood both ways, but the most natural English interpretation is usually:

• The wrinkled shirt needs ironing.

The Arabic wording uses the tool, المكواة (the iron), to express the idea. This is very normal.

A similar English idea would be:

• This shirt needs the iron.

That is understandable in English, but needs ironing sounds more natural.

In Egyptian Arabic, ق is often pronounced as a glottal stop.

So القميص is commonly pronounced roughly as:

• el-'amiis

rather than a full q sound.

So the whole sentence might be pronounced roughly like:

• el-'amiis el-mekarmash mehtaag el-makwa

Exact vowels can vary a bit by speaker, but that is a good rough guide.

Yes. Here القميص is masculine singular, so محتاج is also masculine singular.

If the noun were feminine, you would usually say محتاجة.

For example:

• البلوزة المكرمشة محتاجة المكواة
• The wrinkled blouse needs ironing

So agreement matters here, just like with the adjective المكرمش / المكرمشة.

The sentence has two main parts:

1. القميص المكرمش = the subject noun phrase

   • القميص = the shirt
   • المكرمش = the wrinkled

2. محتاج المكواة = the predicate

   • محتاج = needing / needs
   • المكواة = the iron

So the full structure is:

• [the wrinkled shirt] [needs the iron / needs ironing]

This is a very typical Egyptian Arabic sentence pattern.