Η μελωδία είναι γνωστή.

Η is the definite article meaning the.

Here it is:

• feminine
• singular
• nominative (because the noun is the subject of the sentence)

So η μελωδία means the melody.

A native English speaker often notices that Greek articles change form. For example:

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

So the article must match the noun’s gender and number.

In Greek, every noun has a grammatical gender: masculine, feminine, or neuter.
Μελωδία happens to be a feminine noun, so it takes the feminine article η and feminine adjective forms like γνωστή.

This does not mean a melody is biologically female. It is just a grammatical category.

You should learn nouns together with their article when possible:

• η μελωδία
• not just μελωδία

That makes it much easier to remember the noun’s gender.

Είναι is the verb to be.

In this sentence, it means is.

A useful thing to know is that είναι is used for:

• he is
• she is
• it is
• they are

So Greek does not always distinguish these forms the way English does.

Here, because η μελωδία is singular, είναι is understood as is.

Because Greek adjectives must agree with the noun they describe.

Since μελωδία is:

• feminine
• singular
• nominative

the adjective must also be:

• feminine
• singular
• nominative

So you get:

• masculine: γνωστός
• feminine: γνωστή
• neuter: γνωστό

This is one of the most important grammar patterns in Greek:
articles, nouns, and adjectives must match.

Because Greek word order is more flexible than English.

The most neutral order here is:

• Η μελωδία είναι γνωστή.

That is a very natural way to say it.

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

• Γνωστή είναι η μελωδία.

This can sound more marked or emphatic, something like The melody is the thing that is known/familiar.

So the original sentence uses the most straightforward, standard order:

• subject + verb + adjective

A rough pronunciation is:

ee meh-loh-THEE-ah EE-neh gnoh-STEE

A few details:

• η sounds like ee
• δ sounds like th in this, not th in thin
• εί in είναι is pronounced ee
• γν in γνωστή may feel unusual to English speakers; the γ is pronounced, but lightly, before n

The stress falls on:

• μελωδία → on -δί-
• είναι → on εί-
• γνωστή → on the final -στή

The accent marks show which syllable is stressed.

In this sentence:

• μελωδία
• είναι
• γνωστή

the accent tells you where to place the emphasis when speaking.

This matters because stress is an important part of Greek pronunciation, and changing stress can sometimes change meaning or make your Greek sound unnatural.

English speakers often overlook written accents at first, but in Greek they are very useful and should be learned as part of the word.

In normal standard Greek, no—you usually keep είναι.

So the normal sentence is:

• Η μελωδία είναι γνωστή.

If you remove είναι, the result may sound like:

• a heading
• a note
• a poetic or very compressed style

But in ordinary speech and writing, you normally use the verb.

That is different from some languages where the present tense of to be is often omitted.

Not always exactly. Depending on context, γνωστός / γνωστή / γνωστό can mean:

• known
• well-known
• familiar

So in a sentence like this, the exact English wording depends on context.

For example, it could suggest:

• the melody is known to people
• the melody is familiar
• the melody is well known

Greek often leaves that nuance to the situation.

Because η as the feminine singular article is normally unstressed and is written without an accent.

At the start of the sentence, it is capitalized as Η.

So:

• lowercase: η
• uppercase at the beginning of a sentence: Η

This is just the article the, not the pronoun she in this sentence. Context tells you which one it is.

Because it uses the definite article η, it refers to a specific melody: the melody.

Greek uses the definite article very often, sometimes even more often than English. In this sentence, the article clearly marks μελωδία as a definite, identifiable noun.

So the structure is not just melody is known, but specifically:

• the melody is known / familiar / well known