عندنا ضيف النهارده، وماما في المطبخ دلوقتي.

In Egyptian Arabic, عند literally means something like at or with, and -نا means us / our.

So:

• عندنا = at us / with us
• In natural English, that often becomes we have

This is a very common way to express possession in Arabic.

So:

• عندنا ضيف = literally At us [there is] a guest
• Natural English: We have a guest

Arabic does not have an indefinite article like English a or an.

So:

• ضيف can mean a guest
• If it were الضيف, that would mean the guest

In this sentence, ضيف is indefinite, so it naturally means a guest.

In Egyptian Arabic, النهارده means today.

Even though it begins with ال, you should learn النهارده as a whole expression. It does not mean the day in this sentence. It functions as a fixed everyday word meaning today.

A learner might notice that it historically relates to the day, but in modern Egyptian Arabic, the important thing is:

• النهارده = today

You do not need to translate the ال separately here.

They refer to different kinds of time:

• النهارده = today
• دلوقتي = now / right now

So in the sentence:

• عندنا ضيف النهارده = We have a guest today
• وماما في المطبخ دلوقتي = And Mom is in the kitchen right now

Using both together is very natural because one gives the broader time (today) and the other gives the immediate current moment (right now).

In Arabic, the present-tense verb to be is usually not stated in sentences like this.

So:

• ماما في المطبخ literally looks like Mom in the kitchen
• But it means Mom is in the kitchen

This is completely normal in both Egyptian Arabic and Standard Arabic for present-time descriptions.

If you wanted past or future, then Arabic would use other words, but in the present, the is/am/are is usually omitted.

The word و means and, and in Arabic it is normally written attached to the following word.

So:

• وماما = و + ماما
• Meaning: and Mom

This is standard Arabic spelling. The و is not a separate word with a space before ماما.

في means in.

So:

• في المطبخ = in the kitchen

This is a very common preposition in Egyptian Arabic.

Examples:

• في البيت = in the house
• في الشارع = in the street
• في المطبخ = in the kitchen

المطبخ means the kitchen.

The prefix الـ is the definite article, like English the.

So:

• مطبخ = a kitchen / kitchen
• المطبخ = the kitchen

In this sentence, English also uses the kitchen, so the Arabic matches that.

A helpful rough pronunciation is:

• عندنا ضيف النهارده، وماما في المطبخ دلوقتي
• ʿandena ḍeef en-naharda, wi māmā fil-maṭbakh dilwaʔti

A few notes:

• ع in عندنا is the letter ʿayn, a sound English does not have.
• ضيف is often pronounced roughly like deef or dayf, depending on the speaker.
• النهارده is commonly pronounced ennaharda because the ل of ال blends into the following ن.
• دلوقتي is often pronounced dilwaʔti or delwaʔti.

You do not need perfect pronunciation immediately; getting the rhythm right is a great start.

This happens because ن is a sun letter.

When الـ comes before certain letters, the ل sound is not pronounced clearly and instead blends into the next consonant.

So:

• النهارده
• is pronounced more like en-naharda

This is a very common pronunciation pattern in Arabic.

Other examples:

• الناس is pronounced en-nās
• النور is pronounced en-nūr

So this is not special to this sentence; it is a general rule.

Yes. ماما is very common in everyday Egyptian Arabic and is natural in casual speech.

It is similar to saying:

• Mom
• Mama
• Mum, depending on the family and the English variety

It is warm, familiar, and completely normal in conversation.

Yes, Egyptian Arabic allows some flexibility in word order.

For example, you could also say:

• النهارده عندنا ضيف

That would still mean We have a guest today.

The version in your sentence:

• عندنا ضيف النهارده

is very natural and conversational. It presents the fact first (we have a guest) and then adds the time (today).

Both are possible, but the sentence you have sounds very normal.

It is clearly colloquial Egyptian Arabic, not formal Standard Arabic.

Signs of that include:

• النهارده for today
• دلوقتي for now
• ماما for mom

A more formal version would use different vocabulary and style. The sentence you have is exactly the kind of thing people would say in everyday Egyptian speech.