Ο υπαίτιος έκανε δήλωση.

Ο is the masculine singular definite article in the nominative case. In English, it usually corresponds to the.

So Ο υπαίτιος means the guilty party / the person responsible / the culprit, depending on context.

A quick article comparison:

• ο = masculine singular nominative
• η = feminine singular nominative
• το = neuter singular nominative

Because in Greek, an adjective can be used substantively, meaning it functions like a noun.

υπαίτιος originally means something like responsible, guilty, or at fault, but with the article ο, it becomes the responsible person / the guilty party / the culprit.

This is very common in Greek. Compare:

• ο καλός = the good man / the good one
• η μικρή = the little girl / the little one
• ο υπαίτιος = the person at fault / the culprit

Here, υπαίτιος is:

• masculine
• singular
• nominative

It agrees with the article ο.

Its basic dictionary form is υπαίτιος, υπαίτια, υπαίτιο.

So the three genders are:

• ο υπαίτιος = masculine
• η υπαίτια = feminine
• το υπαίτιο = neuter

έκανε is the 3rd person singular past tense of κάνω (to do / to make).

So:

• κάνω = I do / I make
• έκανα = I did / I made
• έκανε = he/she/it did / made

In this sentence, έκανε δήλωση means literally made a statement, which is a very natural Greek expression.

The accent shows the stressed syllable: É-kane.

It is also normal for many Greek past-tense forms to have an augment at the beginning, often an ε-, especially in common verbs:

• γράφω → έγραψα
• λέω → είπα
• κάνω → έκανα

So έκανε is a normal past-tense form with stress marked by the accent.

Greek often uses κάνω with a noun where English might prefer a single verb.

So:

• κάνω δήλωση = make a statement
• κάνω ερώτηση = ask a question (literally make a question)
• κάνω λάθος = make a mistake / be mistaken

Greek could also use other verbs in some contexts, but έκανε δήλωση is a very normal and idiomatic expression.

δήλωση is in the accusative singular.

That is because it is the direct object of έκανε.

The noun is feminine, and its basic forms are:

• η δήλωση = the statement / declaration
• της δήλωσης = of the statement
• τη(ν) δήλωση = the statement (object form)

In the sentence:

• Ο υπαίτιος = subject
• έκανε = verb
• δήλωση = direct object

Greek often omits the article in expressions like this, especially when the noun is used in a more general or idiomatic way.

So:

• έκανε δήλωση = made a statement
• έκανε μια δήλωση = made a statement / one statement
• έκανε τη δήλωση = made the statement

The version without the article is very natural and common. It does not sound incomplete.

Yes. That would also be correct.

The difference is roughly:

• Ο υπαίτιος έκανε δήλωση.
  More neutral, idiomatic, and compact: The culprit made a statement.

• Ο υπαίτιος έκανε μια δήλωση.
  Slightly more like The culprit made a statement / one statement, with a clearer sense of a single act.

In many contexts, both are possible.

It is pronounced roughly DHEE-lo-see in English-style approximation.

More carefully:

• δ sounds like th in this
• ή is stressed and sounds like ee
• σ is s

So: dhí-lo-si

The stress is on the first syllable of the stem: δή-.

A rough English-style approximation is ee-PA-ee-tee-os.

A more helpful breakdown:

• υ here sounds like ee
• παί is stressed: pa-EE
• τι sounds like tee
• ος sounds like os

So the stress is on παί: υ-ΠΑΙ-τι-ος

The sentence uses a very normal Greek word order:

• Ο υπαίτιος = subject
• έκανε = verb
• δήλωση = object

So it is basically Subject – Verb – Object, just like common English word order.

Greek is more flexible than English, though, because case endings and articles help show what each word is doing. So you may also see variations for emphasis, such as:

• Δήλωση έκανε ο υπαίτιος.
• Ο υπαίτιος δήλωση έκανε.

These can sound more marked or emphatic depending on context.

Usually yes. It generally refers to someone who is responsible in a blameworthy sense—someone at fault, guilty, or culpable.

So it is not the normal word for neutral responsibility. For neutral responsibility, Greek might use other expressions depending on context, such as:

• υπεύθυνος = responsible
• αρμόδιος = competent / responsible for something officially

So ο υπαίτιος strongly suggests blame.

Normally, that would not be the standard neutral phrasing.

Greek usually wants the article with a noun or adjective used as a noun in this kind of sentence:

• Ο υπαίτιος έκανε δήλωση.

Without the article, υπαίτιος would sound less natural here unless it were part of a special style, headline language, or a very marked structure.

So for everyday Greek, keep the article.

It is fairly neutral, but some parts sound a bit formal or official.

• υπαίτιος is a word you might see in news reports, police language, legal contexts, or formal discussion.
• δήλωση is also common in news and official contexts.

So the whole sentence sounds quite natural, but somewhat like something from a report, article, or official statement rather than casual conversation.