خلينا نضل بالحفلة حتى تجي ضيفتنا الجديدة، وبعدها منروح.

خلينا is a very common Levantine way to say let’s.

• It comes from خلّى = to let / make
• -نا = us

So خلينا نضل literally feels like let us stay, but in natural English it is simply let’s stay.

This structure is extremely common in spoken Arabic:

• خلينا نروح = let’s go
• خلينا نحكي = let’s talk

نضل comes from ضلّ, which in Levantine often means to stay, to remain, or sometimes to keep on.

Here, نضل means we stay / we remain.

So:

• خلينا نضل = let’s stay

The نـ at the beginning marks we.

Because the sentence needs the idea of at the party or in the party, not just the party as a standalone noun.

• بـ = in / at
• الحفلة = the party
• بالحفلة = at the party

In Levantine, بـ is very often used with places and events:

• بالبيت = at home / in the house
• بالجامعة = at the university
• بالحفلة = at the party

Here حتى means until.

So:

• حتى تجي ضيفتنا الجديدة = until our new guest comes

In other contexts, حتى can have other meanings, but in this sentence it clearly means until.

Because after حتى in Levantine, you commonly use the imperfect verb to express the action that has not happened yet.

• تجي = she comes / she arrives

So:

• حتى تجي = until she comes

Notice that Levantine does not need an extra word like will here. The future idea is already understood from حتى and the context.

Yes. In Levantine, تجي can mean either:

• you come (feminine singular)
• she comes

Here it means she comes because the subject right after it is ضيفتنا الجديدة = our new guest.

So the full chunk:

• تجي ضيفتنا الجديدة = our new guest comes

Context tells you which meaning is intended.

Because verb-first word order is very normal in Arabic, including Levantine.

So تجي ضيفتنا الجديدة is a natural way to say:

• our new guest comes

Arabic often puts the verb first, especially in flowing speech and after words like حتى.

You could think of it as:

• until comes our new guest

Of course, that is not how you would translate it into English, but it helps explain the structure.

ضيفتنا means our guest.

It breaks down like this:

• ضيفة = female guest
• -نا = our

When a feminine noun ending in ـة takes a suffix, the t sound comes back:

• ضيفة → ضيفتنا

This is very common in Arabic:

• سيارة = car
• سيارتنا = our car

So:

• ضيفتنا = our guest

In Arabic, adjectives usually come after the noun.

So:

• ضيفتنا الجديدة = our new guest

Also, because ضيفتنا is definite (our guest, not just a guest), the adjective must also be definite:

• الجديدة = the new

This is normal Arabic adjective agreement:

• noun first
• adjective second
• both match in definiteness
• both match in gender and number

So ضيفتنا الجديدة is exactly the expected structure.

وبعدها means and after that or more naturally and then.

• و = and
• بعدها = after that / after it

In this sentence, it connects the next step in the sequence:

• first, stay at the party until the guest arrives
• then, go

So:

• وبعدها منروح = and then we go / after that we leave

منروح means we go or, in this context, more naturally we leave.

It comes from the verb راح / يروح = to go.

In this sentence, since they are already at the party, منروح is best understood as:

• we leave
• we head out
• we go

So:

• وبعدها منروح = and then we leave

In many Levantine varieties, منروح is a normal first-person plural form meaning we go.

So the مـ... pattern here is just part of the spoken Levantine verb form for we.

Learners often expect something simpler like نروح, but in Levantine, forms like:

• منروح = we go
• منحكي = we speak
• منضل = we stay

are very common.

Yes. The sentence sounds naturally Levantine because of several features:

• خلينا for let’s
• نضل for stay
• بالحفلة in a very spoken way
• حتى تجي with a simple imperfect verb
• منروح as a common spoken we go / we leave

So this is the kind of sentence you could really hear in everyday conversation, not something overly formal or bookish.