المفتاح هناك، مش هنا.

A natural Egyptian pronunciation is:

el-miftaḥ henāk, mish hina

A few notes:

• المفتاح → el-miftaḥ
  In Egyptian Arabic, الـ is usually pronounced el-.
• هناك → henāk
• مش → mish
• هنا → hina or sometimes hena depending on the speaker

So the whole sentence sounds roughly like:

el-miftaḥ henāk, mish hina

Because in Arabic, especially in the present tense, you usually do not say a separate word for is / am / are in simple statements.

So:

• المفتاح هناك = The key is there
• literally: the key there

This is completely normal in both Standard Arabic and Egyptian Arabic.

مش means not in Egyptian Arabic.

In this sentence:

• مش هنا = not here

So the full sentence contrasts two places:

• there
• not here

In Egyptian Arabic, مش is the everyday common negation word for many kinds of non-verbal sentences, including location sentences like this one.

Because مش is the normal colloquial Egyptian way to say not here.

• ليس is Standard Arabic / formal Arabic
• مش is what people commonly say in everyday Egyptian speech

So an Egyptian speaker would naturally say:

• المفتاح هناك، مش هنا

Using ليس would sound formal or non-colloquial.

Yes, هناك means there.

In Egyptian Arabic, it is commonly pronounced henāk. It works as a location word, like English there.

So:

• هنا = here
• هناك = there

In this sentence, هناك tells you where the key is.

Because this is a very normal Arabic word order for a simple location statement:

• المفتاح = the topic: the key
• هناك = where it is: there

So:

• المفتاح هناك = The key is there

Arabic often puts the thing being talked about first, then gives information about it.

الـ is the definite article, meaning the.

So:

• مفتاح = a key / key
• المفتاح = the key

In pronunciation, this becomes el-miftaḥ in Egyptian Arabic.

Also, the م in مفتاح is a moon letter, so the l in el- is pronounced clearly:

• el-miftaḥ
• not a doubled consonant sound

The word مفتاح is commonly pronounced in Egyptian Arabic as miftaḥ.

This is a normal Egyptian vowel pattern. Compared with more formal or dictionary-style pronunciation, Egyptian often shifts short vowels a bit.

So for a learner, the important thing is:

• spelling: مفتاح
• Egyptian pronunciation: miftaḥ
• meaning: key

The comma shows a pause and a contrast.

The idea is:

• The key is there
• not here

So it feels like:

• The key is there, not here.

This kind of contrast is very common in speech. A speaker might stress هناك and هنا to make the contrast clear.

Yes. In conversation, مش هنا can stand on its own and means:

• not here

Arabic often leaves out words that are understood from context. So after saying المفتاح هناك, the speaker does not need to repeat المفتاح again.

It is like English:

• The key is there, not here.

You do not need to say:

• The key is there, the key is not here.

Yes, very naturally.

A person might say it when someone is looking in the wrong place:

• المفتاح هناك، مش هنا.

It sounds like a normal everyday Egyptian response meaning:

• The key is over there, not here.

Short, clear location statements like this are extremely common in spoken Arabic.

Yes.

You could simply say:

• المفتاح هناك = The key is there

Adding مش هنا makes the contrast stronger. It helps if the other person is looking here and you want to correct them:

• The key is there, not here.

So the second part is optional, but useful for emphasis or correction.