الصيدلي عارف ان فيه حساسية.

A natural Egyptian pronunciation is:

eṣ-ṣeidali ʿāref inn fīh ḥasāsiyya

A few notes:

• الصيدلي is usually pronounced something like eṣ-ṣeidali.
• عارف in Egyptian is commonly ʿāref.
• ان here is usually pronounced inn.
• فيه is fīh.
• حساسية is ḥasāsiyya.

You do not need to pronounce it in a super formal MSA way; this is a colloquial Egyptian sentence.

Because ص is a sun letter.

In Arabic, the ل of الـ often disappears in pronunciation before sun letters, and the next consonant gets doubled. So:

• الصيدلي is not pronounced al-saydali
• it is pronounced more like eṣ-ṣeidali

This is a very common pattern in Arabic pronunciation.

صيدلي means pharmacist.

With الـ, الصيدلي means the pharmacist.

So the noun is definite here. Arabic uses الـ the way English uses the.

عارف literally comes from the verb يعرف = to know.

But in Egyptian Arabic, عارف is very commonly used to mean:

• knowing
• aware
• knows

So in this sentence, عارف means that the pharmacist knows or is aware.

This is very natural in spoken Egyptian Arabic.

In Egyptian Arabic, the active participle عارف is often used for a present state of knowing.

So:

• الصيدلي عارف = the pharmacist knows / is aware
• الصيدلي يعرف is possible in some contexts, but it is usually less natural here in everyday Egyptian

A simple way to think about it:

• عارف often sounds like a current state: he knows
• يعرف feels more like the regular verb he knows / he gets to know, depending on context

For everyday spoken Egyptian, عارف is the most natural choice here.

Here ان means that.

It introduces the clause after عارف:

• عارف ان... = knows that...

So the structure is:

• الصيدلي = the pharmacist
• عارف = knows
• ان فيه حساسية = that there is an allergy

In informal writing, people often write ان without worrying much about the more formal spelling conventions.

Because this is colloquial Egyptian writing.

In informal Arabic writing, especially dialect writing:

• hamzas are often simplified or omitted
• people often write words the way they are commonly understood, not in strict formal spelling

So ان is a very normal colloquial way to write the word meaning that here.

Here فيه means there is.

So:

• فيه حساسية = there is an allergy

This is extremely common in Egyptian Arabic. فيه often works like an existential expression:

• فيه مشكلة = there is a problem
• فيه وقت = there is time
• فيه دكتور = there is a doctor

Even though فيه can literally mean something like in him/it in other contexts, here it clearly means there is.

Because after فيه you very often get an indefinite noun.

So:

• فيه حساسية = there is an allergy
• not there is the allergy

This is similar to English, where there is often introduces something indefinite:

• There is a problem
• There is a doctor
• There is an allergy

If you wanted to make it more specific, you could add more words, such as:

• فيه الحساسية دي = there is this allergy

But the plain sentence naturally uses حساسية without الـ.

Yes. This is completely normal in Arabic.

Arabic usually does not use a separate present-tense verb to be the way English does.

So a sentence like:

• الصيدلي عارف

already means:

• the pharmacist is aware
• the pharmacist knows

Then the rest of the sentence adds what he knows:

• ان فيه حساسية = that there is an allergy

So yes, it is a full sentence.

This is basically a nominal sentence in Egyptian Arabic.

A simple breakdown is:

• الصيدلي = the subject
• عارف = the predicate
• ان فيه حساسية = a clause explaining what he knows

So the whole structure is:

[subject] + [state/predicate] + [that-clause]

That is a very common Arabic pattern.

عارف is masculine singular, which matches الصيدلي, because pharmacist here is masculine singular.

If the subject changed, عارف would change too. For example:

• الصيدلانية عارفة = the female pharmacist knows
• الصيادلة عارفين = the pharmacists know

So yes, عارف shows agreement.

A very natural negation is:

الصيدلي مش عارف ان فيه حساسية

This means:

The pharmacist doesn’t know that there is an allergy.

In Egyptian Arabic, مش is very commonly used to negate adjectives, participles, and states, and عارف behaves like that here.

Not always.

حساسية can mean:

• allergy
• sensitivity

In a medical context, it very often means allergy, which is probably the intended meaning here.

So the exact English translation depends on context, but allergy is the most likely one in this sentence.

This order is the most natural and straightforward:

الصيدلي عارف ان فيه حساسية

It starts with the topic or subject, the pharmacist, and then says what is true about him, he knows...

Arabic can sometimes allow different word orders, but for a learner, this is the best and most natural order to use.