Η περιουσία είναι μεγάλη.

Η is the feminine singular definite article, so it corresponds to the.

Its lowercase form is η. In this sentence, it goes with περιουσία, which is a feminine noun.

Pronunciation: η / Η sounds like ee in Modern Greek.

In Greek, every noun has a grammatical gender: masculine, feminine, or neuter.

περιουσία is a feminine noun, so it takes the feminine article η and a feminine adjective form like μεγάλη.

This is something you usually learn together with the noun:

• η περιουσία
• not ο περιουσία
• not το περιουσία

It is in the nominative singular.

That is because περιουσία is the subject of the sentence: it is the thing being described as big.

So the structure is:

• Η περιουσία = the subject
• είναι = is
• μεγάλη = big / large

είναι is the present-tense form of είμαι, which means to be.

Here it means is.

A useful thing to know: είναι can mean both is and are, depending on the subject.

For example:

• Η περιουσία είναι μεγάλη. = The property/fortune is big.
• Οι περιουσίες είναι μεγάλες. = The properties/fortunes are big.

Because Greek adjectives must agree with the noun they describe in gender, number, and case.

Since περιουσία is feminine singular nominative, the adjective must also be feminine singular nominative:

• masculine: μεγάλος
• feminine: μεγάλη
• neuter: μεγάλο

So:

• η περιουσία είναι μεγάλη
• ο κήπος είναι μεγάλος
• το σπίτι είναι μεγάλο

Because here μεγάλη is a predicate adjective: it comes after είναι and describes the subject.

So:

• Η περιουσία είναι μεγάλη. = The property/fortune is big.

But if you put the adjective directly before the noun, it becomes part of the noun phrase:

• η μεγάλη περιουσία = the big property / the big fortune

So the difference is:

• η περιουσία είναι μεγάλη = the property is big
• η μεγάλη περιουσία = the big property

Yes, Greek word order is more flexible than English, but different orders can change the emphasis.

The most neutral version is:

• Η περιουσία είναι μεγάλη.

You could also say:

• Μεγάλη είναι η περιουσία.

That version emphasizes μεγάλη more, as if you were saying It is big, the fortune or The fortune is indeed big.

For basic learning, the standard order subject + είναι + adjective is the safest choice.

A simple pronunciation guide is:

ee peh-ree-oo-SEE-ah EE-neh meh-GHA-lee

The stressed syllables are:

• περιουσία
• είναι
• μεγάλη

The accent marks in Greek show you where the stress goes.

Greek uses the definite article more often than English does.

In this sentence, Η περιουσία is a normal definite subject phrase. Depending on context, English might translate it with the, but Greek often sounds natural with the article even where English might be more flexible.

So learners should not assume article use matches English exactly. In Greek, using the article with nouns is very common.

In normal standard Greek, no: you normally keep είναι in a sentence like this.

So the standard sentence is:

• Η περιουσία είναι μεγάλη.

You might sometimes see omission in headlines, notes, or very compressed style, but that is not the normal full-sentence pattern learners should copy.

So for everyday correct Greek, include είναι.