القميص موف.

A common Egyptian pronunciation is el-'amīs mof.

A few notes:

• الـ is usually pronounced el- or il-
• قميص in Egyptian is often pronounced 'amīs, because ق is commonly pronounced like a glottal stop
• موف is usually said something like mof or mov, depending on the speaker

So the whole sentence sounds roughly like el-'amīs mof.

Because in Egyptian Arabic, the present-tense verb to be is usually not stated.

So:

• القميص موف literally looks like the shirt mauve
• but it naturally means The shirt is mauve

This is very normal in Arabic. Compare:

• أنا تعبان = I am tired
• الجو حلو = The weather is nice
• القميص موف = The shirt is mauve

It means the.

So:

• قميص = a shirt / shirt
• القميص = the shirt

In Egyptian Arabic, الـ is usually pronounced el- or il-, so القميص is commonly pronounced el-'amīs.

It is a very common loanword used in Egyptian Arabic for the color mauve / purple-ish.

So even though it is not originally an old native Arabic color word, it is completely normal in everyday Egyptian speech. Egyptians use many borrowed color words, especially for modern shades and fashion colors.

Because Arabic normally puts adjectives after the noun.

But there is an important detail here:

• القميص موف = The shirt is mauve
  This is a full sentence.

Compare that with:

• قميص موف = a mauve shirt
• القميص الموف = the mauve shirt

So in Arabic, the color word comes after the noun whether it is:

• part of a sentence, or
• part of a noun phrase

Usually, words like موف are treated as unchanging in everyday Egyptian Arabic.

So you can commonly hear:

• قميص موف = a mauve shirt
• بلوزة موف = a mauve blouse
• قمصان موف = mauve shirts

This is different from some more traditionally Arabic color adjectives, which may change form.

It sounds much more like Egyptian everyday speech.

The structure without is works in both, but موف feels especially colloquial and common in spoken Arabic. In more formal Modern Standard Arabic, someone might prefer a different color word, depending on the exact shade.

So القميص موف is a very natural kind of thing to hear in conversation in Egypt.

Yes. A very common alternative is:

القميص لونه موف

This literally means The shirt, its color is mauve, but in natural English it is just The shirt is mauve.

Both are fine, but:

• القميص موف is shorter
• القميص لونه موف is a little more explicit

You can say:

القميص مش موف

This means The shirt isn’t mauve.

In Egyptian Arabic, مش is the usual way to negate this kind of sentence.

A very natural way is just to keep the same words and use question intonation:

القميص موف؟

This means Is the shirt mauve?

You can also say:

هو القميص موف؟

This can sound a little more like Is the shirt mauve, then? / Is it the shirt that’s mauve?, depending on context, but both are possible.