Η κλοπή δηλώθηκε χτες.

• Η = the feminine singular nominative definite article (the)
• κλοπή = theft, a feminine singular noun
• δηλώθηκε = was reported / was declared, a 3rd person singular passive verb in the aorist
• χτες = yesterday

So the structure is basically:

Η κλοπή = the subject
δηλώθηκε = the verb
χτες = a time expression

Greek is saying: The theft was reported yesterday.

In Greek, the definite article is used very often, including with subjects where English may or may not use the.

Here, Η κλοπή means the theft. It refers to a specific theft, not theft in general.

Compare:

• Η κλοπή = the theft
• κλοπή = theft (more general, dictionary-like, or used in certain contexts without the article)

In a normal sentence like this, Greek strongly prefers the article.

Because κλοπή is simply a noun that belongs to the feminine grammatical gender class in Greek. Grammatical gender is a property of the noun itself and does not mean the thing is biologically female.

You can tell it is feminine here because it takes the feminine article η.

Its basic singular forms are:

• nominative: η κλοπή
• genitive: της κλοπής
• accusative: την κλοπή

δηλώθηκε is the aorist passive, 3rd person singular, of δηλώνω.

In this sentence it means:

• was reported
• was declared
• was filed/reported depending on context

With κλοπή, the natural English translation is usually was reported.

So:

• δηλώνω = I report / I declare
• δηλώθηκε = it was reported / it got reported

The aorist usually presents the action as a completed whole, so here it refers to a single completed event in the past.

Yes. This sentence is passive because the focus is on the theft, not on who reported it.

So Greek says:

• Η κλοπή δηλώθηκε χτες. = The theft was reported yesterday.

An active version would be something like:

• Κάποιος δήλωσε την κλοπή χτες. = Someone reported the theft yesterday.

The passive is very natural when the person who did the reporting is unknown, unimportant, or not being emphasized.

It is 3rd person singular.

That matches the subject Η κλοπή, which is singular.

So Greek is literally saying:

• the theft was reported

If the subject were plural, the verb would also be plural:

• Οι κλοπές δηλώθηκαν χτες. = The thefts were reported yesterday.

Greek usually does not need an extra subject pronoun like it when the subject is already expressed.

English often needs a pronoun or explicit subject in every clause, but Greek does not.

Here, Η κλοπή already gives the subject, so nothing else is needed.

Even without the noun, the verb form can often imply the subject grammatically, though in this sentence the noun is present and clear.

κλοπή is in the nominative singular because it is the subject of the sentence.

You can tell from:

• the article η → feminine singular nominative
• the role in the sentence → the thing that was reported

If the noun were a direct object, you would normally expect the accusative instead. For example:

• Δήλωσαν την κλοπή. = They reported the theft.

Here την κλοπή is accusative because it is the object.

But in Η κλοπή δηλώθηκε, the theft is the subject of a passive verb, so it is nominative.

Yes. χτες and χθες both mean yesterday.

• χτες is very common in everyday speech and informal writing
• χθες is a bit more formal or traditional in spelling

Both are completely standard and understood by everyone.

So these are both fine:

• Η κλοπή δηλώθηκε χτες.
• Η κλοπή δηλώθηκε χθες.

Because χτες is a monosyllabic word in Modern Greek, and monosyllables normally do not take a written accent.

That is different from χθες, which is also the word for yesterday but spelled differently.

So the lack of accent in χτες is normal and correct.

Yes. Greek word order is more flexible than English because grammatical roles are often shown by endings and articles, not just by position.

This sentence could also appear as:

• Χτες δηλώθηκε η κλοπή.
• Η κλοπή χτες δηλώθηκε.
• Δηλώθηκε χτες η κλοπή.

All of these can work, but they may sound slightly different in emphasis.

The original Η κλοπή δηλώθηκε χτες is a straightforward, neutral way to say it.

Roughly speaking:

• sentence-initial χτες emphasizes when
• sentence-initial δηλώθηκε can sound more narrative or stylistic
• the original order keeps the subject first and is easy to process

It is pronounced roughly dhee-LO-thee-ke.

The stress is on λώ:

• δηΛΩθηκε

That accent mark is important because it shows which syllable is stressed.

Likewise:

• κλοπή → klo-PEE
• Η → ee
• χτες → htes / xtes, one syllable

Not always. The verb δηλώνω has a broader meaning: to declare, state, report, register.

So δηλώθηκε can mean things like:

• was declared
• was stated
• was reported
• was registered

The exact English choice depends on context.

With κλοπή, the most natural translation is usually was reported, because in English we commonly report a theft.

Yes, absolutely. That is probably the most natural real-world interpretation.

Greek δηλώνω μια κλοπή often means to report a theft, especially to the police or another authority.

So the sentence strongly suggests that the theft became officially reported yesterday, not necessarily that the theft happened yesterday.

That distinction matters:

• Η κλοπή έγινε χτες. = The theft happened yesterday.
• Η κλοπή δηλώθηκε χτες. = The theft was reported yesterday.

Those are not the same thing.

It is mostly neutral.

• δηλώθηκε is standard and neutral
• χτες makes it a little more everyday and conversational than χθες

So it sounds very normal in ordinary speech and writing. If you wanted a slightly more formal written style, you might write:

• Η κλοπή δηλώθηκε χθες.

But the original sentence is completely natural Greek.