Η όδευση διαφυγής είναι ελεύθερη.

It breaks down like this:

• Η όδευση διαφυγής = the subject noun phrase
• είναι = is
• ελεύθερη = an adjective describing the subject

So the pattern is:

[subject] + [to be] + [predicate adjective]

More specifically:

• όδευση is the main noun
• διαφυγής depends on it and specifies what kind of route it is
• ελεύθερη agrees with όδευση

Η is the feminine singular definite article, meaning the.

It appears because όδευση is:

• feminine
• singular
• nominative (the subject of the sentence)

So:

• η όδευση = the route / the passage / the path

It is written Η here only because it starts the sentence. In the middle of a sentence, it would be η.

Because Greek often uses the genitive where English uses of or a noun modifier.

The basic noun is:

• η διαφυγή = escape

Its genitive singular is:

• της διαφυγής = of the escape

So:

• όδευση διαφυγής literally means route of escape
• in natural English, that becomes escape route

This is a very common Greek pattern: noun + genitive noun.

Because in Greek, when one noun modifies another in a general or classificatory way, the second noun often appears without its article.

So:

• η όδευση διαφυγής = the escape route

This sounds natural and standard.

If you said:

• η όδευση της διαφυγής

that would sound more like the route of the escape, referring to one specific escape event, not the general type of route. So the version without the article is the normal one here.

Because adjectives in Greek must agree with the noun they describe in:

• gender
• number
• case

The noun όδευση is:

• feminine
• singular
• nominative

So the adjective must also be feminine singular nominative:

• ελεύθερη

Compare:

• ελεύθερος = masculine
• ελεύθερη = feminine
• ελεύθερο = neuter

Since όδευση is feminine, ελεύθερη is the correct form.

Here are the main forms:

• Η όδευση = nominative singular
  This is the subject of the sentence.

• διαφυγής = genitive singular
  This modifies όδευση and means of escape.

• ελεύθερη = nominative singular feminine
  It is a predicate adjective and agrees with όδευση.

So the key contrast is:

• main noun in the nominative
• modifying noun in the genitive

A rough English-friendly pronunciation is:

ee O-thef-see thee-ah-fee-YEES EE-ne e-LEF-the-ree

A few useful sound notes:

• η sounds like ee
• δ sounds like th in this
• θ sounds like th in think
• ευ is pronounced ef before voiceless sounds like σ and θ

So:

• όδευση ≈ O-thef-see
• διαφυγής ≈ thee-ah-fee-YEES
• είναι ≈ EE-ne
• ελεύθερη ≈ e-LEF-the-ree

The stress falls on:

• όδευση
• διαφυγής
• είναι
• ελεύθερη

It is understandable, but it sounds formal and technical.

You are especially likely to see it in:

• safety instructions
• building regulations
• fire-safety language
• official notices

In more everyday speech, depending on context, people might use other expressions such as:

• έξοδος κινδύνου = emergency exit
• δρόμος διαφυγής = escape route / route of escape

So όδευση διαφυγής is good Greek, but it belongs more to official or technical language.

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

The neutral, straightforward version is:

• Η όδευση διαφυγής είναι ελεύθερη.

But for emphasis, Greek could also say:

• Ελεύθερη είναι η όδευση διαφυγής.

That puts more focus on ελεύθερη.

Even though alternative orders are possible, the original sentence is the most natural neutral order for a standard statement.

In a full normal sentence, είναι is usually kept:

• Η όδευση διαφυγής είναι ελεύθερη.

However, in signs, checklists, labels, or short notes, Greek sometimes drops the verb to be, especially when the meaning is obvious from context. So you might also see something like:

• Ελεύθερη η όδευση διαφυγής

That is more elliptical, like a notice rather than a full spoken sentence.

Grammatically it is the same adjective ελεύθερος / ελεύθερη / ελεύθερο, but in this context the most natural sense is closer to:

• clear
• unobstructed
• open

So in safety language, ελεύθερη does not mean free in the sense of not costing money. It means the route is not blocked and can be used.

This kind of context-based meaning is very common in Greek, just as in English.