Εκείνος είναι φλύαρος και μιλάει ασταμάτητα στο διάλειμμα.

Greek often allows the subject pronoun to be omitted, because the verb ending already shows the person and number. So:

• είναι = he/she/it is (or is depending on context)

Adding Εκείνος makes the subject more explicit. It can suggest:

• that man / that one
• or simply he, with a bit more emphasis or contrast

So compared with just Είναι φλύαρος..., Εκείνος είναι φλύαρος... can sound more like:

• He is talkative
• That guy is talkative
• That one is talkative

depending on context.

Εκείνος is usually the demonstrative pronoun/adjective meaning that.

It can work in two ways:

1. As a pronoun:

   • Εκείνος μιλάει. = That one / He speaks.

2. As an adjective before a noun:

   • εκείνος ο άνθρωπος = that man

In your sentence, it is being used on its own, so it functions as a pronoun.

It also changes form by gender and number:

• εκείνος = masculine singular
• εκείνη = feminine singular
• εκείνο = neuter singular
• plural forms also exist

είναι is the present tense form of είμαι (to be).

A useful mini-chart:

• είμαι = I am
• είσαι = you are
• είναι = he/she/it is
• είμαστε / είμασtε = we are
• είστε = you are (plural/formal)
• είναι = they are

So είναι can mean either:

• he/she/it is
• or they are

The context tells you which one is meant.

φλύαρος means talkative, long-winded, or too talkative.

It often has a slightly negative feel, more like:

• chatty in an annoying way
• wordy
• someone who talks too much

So it is not always a neutral compliment. If you want a more positive or neutral idea, Greek might use other expressions depending on context.

Also, φλύαρος is an adjective, so it changes form to match gender:

• φλύαρος = masculine
• φλύαρη = feminine
• φλύαρο = neuter

Here it is masculine because it refers to Εκείνος.

Yes. μιλάει and μιλά are both common ways to say he/she speaks or is speaking.

They come from the verb μιλάω / μιλώ (to speak).

For many everyday verbs in -άω, Greek often allows two present-tense forms in speech and writing:

• μιλάει
• μιλά

Both are natural in Modern Greek.
μιλάει can sound a little fuller or slightly more conversational to learners, but both are standard and common.

μιλάει is present tense.

In Greek, the present tense can often mean either:

• speaks
• is speaking

depending on context.

So μιλάει ασταμάτητα can be understood as:

• he speaks nonstop
• he is talking nonstop

Greek does not force the same present simple vs present continuous distinction that English does.

ασταμάτητα is an adverb, meaning nonstop, continuously, or without stopping.

It describes how he speaks:

• μιλάει ασταμάτητα = he talks nonstop

A lot of Greek adverbs do not change form, so ασταμάτητα stays the same.

You may also notice the connection with:

• σταματώ = I stop
• α- can act like a negative prefix in some words

So the overall idea is literally something like without stopping.

στο διάλειμμα is made of:

• στο = σε + το
• διάλειμμα = break, recess, intermission

So literally:

• σε το διάλειμμα → contracted to στο διάλειμμα

This means:

• at the break
• during the break
• at recess

This contraction is extremely common in Greek:

• σε + το = στο
• σε + τη(ν) = στη(ν)
• σε + τα = στα

Yes. After σε (and therefore after στο), Greek uses the accusative case.

The noun here is:

• το διάλειμμα = the break

For this noun, the nominative and accusative singular look the same:

• nominative: το διάλειμμα
• accusative: το διάλειμμα

So you do not see a visible change, but grammatically it is accusative because it follows σε / στο.

This is very common with neuter nouns.

Not completely. Greek word order is more flexible than English word order.

The neutral order here is:

• Εκείνος είναι φλύαρος και μιλάει ασταμάτητα στο διάλειμμα.

But Greek could move things around for emphasis, for example:

• Στο διάλειμμα μιλάει ασταμάτητα.
  = emphasis on during the break

• Ασταμάτητα μιλάει στο διάλειμμα.
  = emphasis on nonstop

• Φλύαρος είναι εκείνος...
  = stronger emphasis on talkative

So the original sentence is natural and straightforward, but not the only possible order.

A rough guide:

• φλύαρος ≈ FLYA-ros
• διάλειμμα ≈ DHEE-a-lee-ma or THEE-a-lee-ma, depending on how you represent Greek δ

A few pronunciation notes:

• φ = like English f
• λ = like English l
• υ here sounds like i
• δ in Modern Greek is like th in this, not like English d
• double μμ in διάλειμμα is not usually exaggerated heavily in normal speech, but the spelling keeps it

Stress matters a lot in Greek:

• φλύαρος → stress on φλύ-
• διάλειμμα → stress on διά-

και most commonly means and, which is what it means here:

• φλύαρος και μιλάει... = talkative and talks...

But in other contexts, και can also mean also, too, or add emphasis.

Examples:

• Και εγώ. = Me too.
• Αυτός και αν μιλάει πολύ. = He really does talk a lot.

So the exact meaning depends on context, but in your sentence it is the simple connector and.

Yes, absolutely. That would be very natural Greek.

Greek often drops subject pronouns when the subject is clear from context or from the verb form. So:

• Είναι φλύαρος και μιλάει ασταμάτητα στο διάλειμμα.

can still mean:

• He is talkative and talks nonstop during the break.

Using Εκείνος gives more explicit reference or emphasis, especially if you are contrasting him with someone else. For example:

• Εκείνος είναι φλύαρος, αλλά ο αδερφός του είναι ήσυχος.
  = He is talkative, but his brother is quiet.