الفستان ده حلو، بس الجزمة دي مش مقاسي.

A common pronunciation is:

el-fustān da ḥelw, bas el-gizma di mish maʾāsi

A few useful notes:

• الـ is usually pronounced el- in Egyptian Arabic.
• ج in Egyptian is usually a hard g sound, so الجزمة sounds like el-gizma or el-gezma.
• ق in مقاسي is typically pronounced as a glottal stop in Egyptian, so مقاسي sounds like maʾāsi.

In Egyptian Arabic, the normal everyday pattern for this/that with a noun is:

• noun + ده for masculine
• noun + دي for feminine

So:

• الفستان ده = this dress
• الجزمة دي = this shoe

To an English speaker, it may feel like the dress this, but in Egyptian Arabic that is the standard colloquial structure.

They both point to something specific, but they match the noun’s gender:

• ده = masculine singular
• دي = feminine singular

In this sentence:

• فستان is masculine, so it takes ده
• جزمة is feminine, so it takes دي

This is grammatical gender, not biological gender. Even objects are treated as masculine or feminine in Arabic.

Because in Egyptian Arabic, when you say this/that + noun using the pattern noun + ده/دي, the noun is normally definite, so it usually takes الـ.

So:

• الفستان ده
• الجزمة دي

This is the normal colloquial way to say this dress and this shoe.

In Arabic, the verb to be is usually omitted in the present tense.

So:

• الفستان ده حلو literally looks like this dress nice
• الجزمة دي مش مقاسي literally looks like this shoe not my size

But the meaning is:

• This dress is nice
• This shoe isn’t my size

This is completely normal in Arabic.

Because حلو agrees with فستان, and فستان is masculine.

So:

• masculine noun → حلو
• feminine noun → حلوة

For example:

• الفستان ده حلو = this dress is nice
• الجزمة دي حلوة = this shoe is nice

Adjectives in Arabic usually agree with the noun in gender and number.

Yes, حلو originally means sweet, but in Egyptian Arabic it is very commonly used to mean:

• nice
• pretty
• good-looking
• lovely

So in this sentence, حلو means something like nice or pretty, not literally sweet.

It’s one of the most common everyday adjectives in Egyptian Arabic.

Here, بس means but.

So it connects the two parts of the sentence:

• الفستان ده حلو = this dress is nice
• بس = but
• الجزمة دي مش مقاسي = this shoe isn’t my size

In other contexts, بس can also mean only, just, or even stop/enough, depending on the situation.

مش is a very common Egyptian Arabic negation word.

Here it negates مقاسي:

• مقاسي = my size
• مش مقاسي = not my size

This is the usual way to negate a nominal or adjectival sentence in Egyptian Arabic.

Compare:

• حلو = nice
• مش حلو = not nice

So الجزمة دي مش مقاسي means this shoe is not my size.

مقاسي is made of:

• مقاس = size
• ـي = my

So مقاسي literally means my size.

That makes:

• مش مقاسي = not my size

In natural English, that often becomes:

• It’s not my size
• It doesn’t fit me

So this is a very natural way in Egyptian Arabic to talk about clothing or shoes not fitting.

Yes. جزمة is a very common everyday Egyptian Arabic word for shoe.

A learner might also know حذاء, but that is more formal or closer to Modern Standard Arabic. In everyday Egyptian speech, جزمة is much more natural.

So:

• جزمة = everyday Egyptian word
• حذاء = more formal/standard Arabic word