الكاشير قال لي ان مافيش جزمة بالمقاس ده.

A natural pronunciation is:

el-kāshīr ’āl li inn mafīsh gazma bil-me’ās da

A rough word-by-word guide:

• الكاشير → el-kāshīr
• قال لي → ’āl li
• ان → inn or in
• مافيش → mafīsh
• جزمة → gazma
• بالمقاس → bil-me’ās
• ده → da

A few pronunciation notes:

• ج in Egyptian Arabic is usually pronounced like g in go, so جزمة is gazma, not jazma.
• ق in Egyptian Arabic is often pronounced as a glottal stop ’, so قال sounds like ’āl and مقاس sounds like me’ās.
• الـ in الكاشير is pronounced el- here.

الكاشير means the cashier. It is a very common borrowed word in Egyptian Arabic, from English cashier.

So:

• كاشير = cashier
• الكاشير = the cashier

This kind of borrowing is very normal in everyday Egyptian Arabic, especially for jobs, shops, and modern life vocabulary.

You could also hear more formal Arabic alternatives in other contexts, but الكاشير is completely natural in daily speech in Egypt.

قال لي means he told me.

It is made of:

• قال = he said / told
• لي = to me

Literally, it is something like said to me.

In Arabic, the idea of to me is often expressed with لـ plus a pronoun:

• لي = to me
• لك = to you
• له = to him
• لها = to her

So:

• قال لي = he said to me / he told me
• قال لها = he told her
• قال لهم = he told them

ان here means that, introducing the content of what was said.

So the structure is:

• قال لي ان... = he told me that...

In Egyptian Arabic, this word is often pronounced inn or in.

So:

• قال لي ان مافيش... = He told me that there isn’t / there aren’t...

In fast speech, some speakers may reduce it a bit, but its function is the same: it links the first clause to the statement that follows.

مافيش is one of the most common Egyptian Arabic expressions. It means:

• there isn’t
• there aren’t
• there is no
• there are no
• sometimes even not available

In this sentence:

• مافيش جزمة بالمقاس ده = There isn’t a shoe in that size / There are no shoes in that size

You can think of مافيش as a very useful all-purpose negative existence phrase in Egyptian Arabic.

Examples:

• مافيش وقت = There’s no time
• مافيش فلوس = There’s no money
• مافيش مشكلة = There’s no problem

It is colloquial Egyptian, not formal Standard Arabic.

This is a very common learner question.

جزمة literally means a shoe. But in Arabic, a singular noun after a negative existential expression like مافيش can sound natural even when English would often translate it more generally.

So:

• مافيش جزمة بالمقاس ده can literally be There isn’t a shoe in that size
• but in natural English, the meaning may be There are no shoes in that size

The sentence focuses on the non-existence of any matching item.

Also, in a store context, singular forms are often used in a generic way.

جزمة usually means shoe. In actual usage, depending on context, it may refer to:

• one shoe
• a shoe type
• footwear in general in a shop context

In shopping situations, Arabic often uses singular nouns in ways that English may translate more flexibly.

If someone says:

• عايز جزمة = I want shoes / I want a pair of shoes / I want a shoe

the exact English translation depends on context.

So in your sentence, the practical meaning is about shoe availability in that size, not about one physically isolated shoe.

بالمقاس ده means in that size.

It breaks down like this:

• بـ = with / in / by
• المقاس = the size / the measurement
• ده = this / that

So literally it is something like:

• with the size this
• more naturally: in this size or in that size

In context, English usually says in that size.

This is a very common shop phrase in Egyptian Arabic.

In Egyptian Arabic, demonstratives like ده often come after the noun.

So:

• المقاس ده = this size / that size
• اللون ده = this color
• المحل ده = this shop

This is normal word order in Egyptian Arabic.

It may feel backwards compared to English, but it is one of the most basic patterns in spoken Arabic.

Also, in everyday Egyptian, ده can be translated as either this or that, depending on context and tone. Very often, English will use this, but in your sentence, that size may fit the context better.

The بـ in بالمقاس gives the sense of in or with regard to the size.

So:

• جزمة بالمقاس ده = a shoe in this/that size

Without بـ, the phrase would not sound the same. The preposition is part of the natural way Egyptian Arabic expresses size in shopping contexts.

Compare:

• بالمقاس ده = in that size
• بالمقاس الكبير = in the large size

This use of بـ is very common with clothing, shoes, and measurements.

This sentence is definitely Egyptian colloquial Arabic.

The clearest signs are:

• مافيش → colloquial Egyptian
• ده → colloquial Egyptian demonstrative
• الكاشير → everyday borrowed vocabulary
• pronunciation implied by Egyptian speech patterns

A more formal Modern Standard Arabic version would be quite different, for example using words closer to:

• أخبرني أمين الصندوق أنه لا يوجد حذاء بهذا المقاس

That is much more formal and less likely in everyday speech in Egypt.

So if your goal is spoken Egyptian, your original sentence is natural.

Because المقاس is grammatically masculine.

In Egyptian Arabic:

• ده is used with masculine nouns
• دي is used with feminine nouns

So:

• المقاس ده = this/that size
• الجزمة دي = this/that shoe

Even though the whole phrase contains جزمة, the demonstrative here is attached to المقاس, not جزمة.

Because nouns ending in ـة are very often feminine in Arabic, and جزمة is one of them.

So you would say:

• الجزمة دي = this shoe
• جزمة جديدة = a new shoe

Notice the adjective is also feminine:

• جديدة = new, feminine

This matters when you use adjectives or pronouns with the word.

Yes. That is one reason it is so useful.

Examples:

• مافيش كتاب = There is no book
• مافيش كتب = There are no books
• مافيش جزمة بالمقاس ده = There isn’t a shoe / There are no shoes in that size

So مافيش itself does not change for singular vs. plural the way English isn’t / aren’t does.

The context tells you whether the meaning is singular or plural.

It can mean both, depending on context.

• قال literally is said
• but قال لي often naturally translates as told me

So in this sentence:

• الكاشير قال لي...

  can be translated as:

• The cashier said to me...
• The cashier told me...

In natural English, told me is usually the smoother translation here.

Yes, very easily. Egyptian Arabic has lots of natural variants. For example, someone might say:

• الكاشير قال لي إن مفيش جزمة بالمقاس ده
• قالوا لي مفيش مقاس
• مافيش منه المقاس ده
• المقاس ده مش موجود

All of these can express similar store-related meanings, depending on context.

Your original sentence is perfectly normal, but everyday speech often has multiple equally natural versions.

A common plural is جزم. You may also hear other plural patterns depending on region or style.

So you could hear:

• مافيش جزم بالمقاس ده = There are no shoes in that size

That would also be natural.

But using the singular جزمة in your original sentence is still completely normal in context.

It is casual to neutral spoken Egyptian Arabic.

It sounds like normal conversation, especially in a shop.

Why it feels informal:

• مافيش is colloquial
• ده is colloquial
• الكاشير is an everyday borrowed word

So this is exactly the kind of sentence you would expect to hear in real life in Egypt, not in a formal written announcement or news report.