Η καθυστέρηση προκάλεσε χάος.

Η is the definite article, meaning the.

In this sentence, it is:

• feminine
• singular
• nominative

It matches καθυστέρηση, which is a feminine singular noun and the subject of the sentence.

A useful detail: at the start of a sentence it is capitalized as Η, but normally you will see η.

Because η καθυστέρηση is in the nominative, which is the case normally used for the subject.

So:

• η καθυστέρηση = the subject
• χάος = the thing affected by the action, so the object

In other words, the delay is what did the causing.

προκάλεσε is the aorist, which is the normal Greek tense for a completed action in the past.

Here it means caused as a single completed event.

Compare:

• προκάλεσε = caused
• προκαλούσε = was causing / used to cause

So this sentence presents the causing as a finished past event.

The dictionary form is προκαλώ.

That is the present-tense / citation form you would usually look up in a dictionary.

A few related forms:

• προκαλώ = I cause / I am causing
• προκάλεσα = I caused
• προκάλεσε = he/she/it caused

So προκάλεσε is the 3rd person singular aorist form of προκαλώ.

Greek does not always use the definite article where English uses the, and it also often leaves out the article with abstract or general ideas.

So χάος here means something like chaos in a general sense, not necessarily the specific chaos.

Compare:

• προκάλεσε χάος = caused chaos
• προκάλεσε το χάος = caused the chaos / caused that specific chaos

Both are possible, but they do not feel exactly the same.

Here χάος is the accusative singular, because it is the direct object of the verb.

It looks the same as the nominative because χάος is a neuter noun, and many neuter nouns in Greek have the same form in the nominative and accusative singular.

So:

• nominative: το χάος
• accusative: το χάος

The job of the word changes, even though the form stays the same.

-ος is often masculine, but not always.

Greek noun endings are helpful, but they are not perfect one-to-one rules. χάος is a good example of a neuter noun ending in -ος.

So you should learn nouns together with their article:

• η καθυστέρηση = feminine
• το χάος = neuter

Learning the article with the noun is one of the best habits in Greek.

Yes. Greek word order is more flexible than English word order.

The neutral order here is:

• Η καθυστέρηση προκάλεσε χάος.
  • subject + verb + object

But Greek can move parts around for emphasis, for example:

• Προκάλεσε χάος η καθυστέρηση.
• Χάος προκάλεσε η καθυστέρηση.

These still mean the same basic thing, but the emphasis changes. The original version is the most straightforward and neutral.

A simple learner-friendly pronunciation is:

ee ka-thee-STE-ri-si pro-KA-le-se HA-os

A more precise pronunciation guide would be:

• Η = ee
• καθυστέρηση = ka-thi-STE-ri-si
• προκάλεσε = pro-KA-le-se
• χάος = HA-os

A few helpful notes:

• θ sounds like th in think
• χ sounds like the ch in Scottish loch or German Bach
• χάος has two syllables: HA-os

Because in Modern Greek, several different spellings are pronounced /i/.

So η, ι, υ, ει, οι, and υι can all sound like ee.

This means Greek spelling preserves older distinctions, even though the modern pronunciation is the same.

So in this sentence:

• Η is pronounced ee
• but it is still written with the letter eta: η

Yes. Nouns ending in -ηση are very often feminine.

So when you see something like:

• η καθυστέρηση
• η συζήτηση
• η απάντηση

there is a good chance it will be a feminine noun.

This is not an absolute rule for every noun in Greek, but it is a very useful pattern to know.

Yes, definitely.

Accent marks in Greek are part of the standard spelling, and they tell you which syllable is stressed.

For example:

• καθυστέρηση is stressed on τέ
• προκάλεσε is stressed on κά
• χάος is stressed on χά

If you leave accents out, Greek readers will often still understand you, but correct spelling includes them, and they are especially important for learners because they guide pronunciation.