Όταν τελειώνει η συνάντηση, πάμε μαζί σπίτι.

Because this sentence describes a habitual/repeated situation: whenever the meeting ends, we go home together.

In Greek, the present tense is often used for actions that happen regularly:

• Όταν τελειώνει η συνάντηση, πάμε μαζί σπίτι.
  = whenever the meeting ends, we go home together

If you were talking about one specific future meeting, Greek would usually change the form:

• Όταν τελειώσει η συνάντηση, θα πάμε μαζί σπίτι.
  = when the meeting ends, we’ll go home together

So here, τελειώνει suggests a repeated or usual pattern, not just one future event.

Τελειώνει is the 3rd person singular form of τελειώνω.

Here it means:

• it ends
• it finishes
• literally, the meeting ends

So:

• η συνάντηση τελειώνει = the meeting ends

This verb can be used both:

• intransitively: Η ταινία τελειώνει. = the film ends
• transitively: Τελειώνω τη δουλειά. = I finish the work

In this sentence, it is intransitive, because the meeting itself is ending.

Greek uses the definite article much more often than English.

So even where English might say when meeting ends in some reduced style, Greek normally says:

• όταν τελειώνει η συνάντηση

The article η shows that this is a specific noun phrase:

• η συνάντηση = the meeting

Leaving out the article here would sound unnatural in normal Greek.

Both can mean we go.

• πάμε
• πηγαίνουμε

In everyday Greek, πάμε is extremely common and natural. It is shorter and more conversational.

So:

• πάμε μαζί σπίτι
• πηγαίνουμε μαζί σπίτι

Both are correct, but πάμε sounds more natural in ordinary speech.

A useful thing to know: πάμε can also mean let’s go!, but here the context clearly means we go.

Because in Greek, σπίτι can work a lot like English home.

So:

• πάω σπίτι = I go home
• πάμε σπίτι = we go home

This is a very common pattern.

If you say:

• πάμε στο σπίτι

that means more literally we go to the house/home, and it can sound a bit more specific or concrete.

So in this sentence, σπίτι without an article is the natural choice because the meaning is simply home.

Μαζί means together.

So:

• πάμε μαζί σπίτι = we go home together

Its position is fairly flexible, but some placements sound more natural than others.

Common options:

• Πάμε μαζί σπίτι.
• Μαζί πάμε σπίτι. (more emphasis on *together)*
• Πάμε σπίτι μαζί. (possible, but often less natural in neutral speech)

The version in your sentence is very natural and neutral.

Not completely. Greek word order is more flexible than English word order, but that does not mean every order sounds equally natural.

The given sentence is the most neutral:

• Όταν τελειώνει η συνάντηση, πάμε μαζί σπίτι.

You could also say:

• Όταν η συνάντηση τελειώνει, πάμε μαζί σπίτι.

This is grammatically possible, but it sounds less natural in everyday Greek. Greek often prefers the verb before the subject in clauses like this:

• τελειώνει η συνάντηση

So a learner should usually stick with the original order unless there is a reason to emphasize something.

Because the sentence begins with a subordinate time clause:

• Όταν τελειώνει η συνάντηση = when the meeting ends

Then comes the main clause:

• πάμε μαζί σπίτι = we go home together

Greek normally separates these with a comma when the όταν-clause comes first.

So the structure is:

• [When the meeting ends], [we go home together].

This is similar to English punctuation.

Sometimes, yes, but the meaning shifts a little.

• όταν = when
• όποτε = whenever / any time that

Your sentence with όταν can already have a habitual meaning because of the present tense:

• Όταν τελειώνει η συνάντηση, πάμε μαζί σπίτι.

If you say:

• Όποτε τελειώνει η συνάντηση, πάμε μαζί σπίτι.

that sounds more like whenever the meeting ends with extra emphasis on repetition.

So όταν is perfectly good here, and usually the more neutral choice.

A simple pronunciation guide is:

• Ótan teleiónei i synántisi, páme mazí spíti.

A few useful notes:

• Όταν = OH-tan
• τελειώνει = teh-lee-OH-nee
• η is pronounced ee
• συνάντηση = see-NA-nee-see
• πάμε = PA-meh
• μαζί = ma-ZEE
• σπίτι = SPEE-tee

The written accent marks show which syllable gets the stress.