Στα Χριστούγεννα μένω πάντα στο σπίτι με την οικογένειά μου.

In Greek, Χριστούγεννα is normally treated as a neuter plural noun. Greeks talk about Christmas as a holiday period, a bit like the Christmas holidays in English.

So you usually get:

• τα Χριστούγεννα = Christmas
• στα Χριστούγεννα = at Christmas / during Christmas

A singular form is not the normal way to name the holiday.

Yes, you very often can say just τα Χριστούγεννα to mean at Christmas.

In this sentence, στα is the contraction of σε + τα, so στα Χριστούγεννα literally means at / during Christmas.

Both patterns are common:

• Τα Χριστούγεννα μένω σπίτι.
• Στα Χριστούγεννα μένω σπίτι.

Using στα makes the time expression a little more explicitly prepositional, but the overall meaning is basically the same.

Μένω can mean both live and stay, depending on context.

For example:

• Μένω στην Αθήνα = I live in Athens
• Μένω στο σπίτι = I stay at home

In your sentence, the meaning is clearly I stay or I remain, not I live, because it is about what the speaker does at Christmas.

Greek often uses the present tense for habitual or repeated actions, just as English does in sentences like I always stay home at Christmas.

So μένω πάντα means:

• I always stay
• I habitually stay

It is not talking about this exact moment. It is describing a usual pattern.

Greek word order is more flexible than English word order.

Here, μένω πάντα is a very natural way to say I always stay. But Greek can move πάντα around for rhythm or emphasis. For example:

• Πάντα μένω στο σπίτι...
• Μένω πάντα στο σπίτι...

Both are grammatical. The version in your sentence is neutral and natural.

Στο is a contraction of σε + το.

So:

• σε = in, at, to
• το = the
• στο = in the / at the / to the

The same thing happens in:

• στα = σε + τα
• στη = σε + τη(ν)
• στον = σε + τον

Greek uses these contracted forms constantly in everyday language.

Greek usually uses the definite article where English often does not.

So στο σπίτι is literally in/at the house, but in normal Greek it often simply means at home.

This is very idiomatic Greek. English prefers at home, while Greek often prefers στο σπίτι.

You may also hear μένω σπίτι without the article in everyday speech, but μένω στο σπίτι is completely standard and very common.

In Greek, possessive words like μου, σου, του, της usually come after the noun, not before it.

So:

• η οικογένειά μου = my family
• literally: the family my

That is why the sentence has:

• με την οικογένειά μου = with my family

Also notice that την is the feminine singular accusative article, because οικογένεια is a feminine noun and it comes after με, which takes the accusative.

This happens because μου is an enclitic, meaning it is a weak, unstressed word that leans on the word before it.

When a word like οικογένεια is followed by an enclitic such as μου, Greek often adds an extra written accent:

• οικογένεια
• οικογένειά μου

This helps show the correct stress pattern in pronunciation. It is a normal spelling rule, not a different word.

In Modern Greek:

• σε takes the accusative
• με also takes the accusative

So in this sentence:

• στα Χριστούγεννα → accusative plural
• στο σπίτι → accusative singular
• με την οικογένειά μου → accusative singular

Sometimes the form looks the same as the nominative, especially with neuter nouns like σπίτι and Χριστούγεννα, so the case is not always obvious just from the ending.

Yes. Greek often moves sentence parts around more freely than English.

For example, all of these are possible:

• Στα Χριστούγεννα μένω πάντα στο σπίτι με την οικογένειά μου.
• Μένω πάντα στο σπίτι με την οικογένειά μου στα Χριστούγεννα.
• Πάντα μένω στο σπίτι με την οικογένειά μου τα Χριστούγεννα.

The version you have begins with Στα Χριστούγεννα to set the time frame first: As for Christmas...

So the word order is natural, but it is not the only possible one.