Η αίτηση αποζημίωσης απορρίφθηκε εξαιτίας της φθοράς.

Because αποζημίωσης depends on αίτηση and specifies what kind of application/request it is.

• η αίτηση = the application / request / claim
• αποζημίωσης = of compensation

So αίτηση αποζημίωσης literally means application of compensation, but in natural English this is usually compensation claim or claim for compensation.

This is a very common Greek pattern:

• αίτηση εργασίας = job application
• κέντρο υγείας = health center
• τιμή πώλησης = sale price

The second noun often goes into the genitive to show a relationship like of, for, or related to.

Η is the feminine singular definite article, meaning the.

It goes with αίτηση, which is a feminine singular noun:

• η αίτηση = the application / the claim

So:

• Η αίτηση = The claim

Greek articles change according to gender, number, and case, so here η is used because αίτηση is:

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

Αίτηση is a noun meaning application, request, or in some contexts claim.

In this sentence, because it is followed by αποζημίωσης and sounds formal/legal, the best translation is usually:

• claim
• or compensation claim

So while αίτηση on its own is often just application or request, the full phrase αίτηση αποζημίωσης is more specific.

Απορρίφθηκε is the aorist passive, third person singular, of απορρίπτω (to reject).

So it means:

• was rejected

Breaking it down:

• απορρίπτω = I reject
• απορρίφθηκε = it was rejected

Why third person singular? Because the subject is η αίτηση (the claim), which is singular.

Why passive? Because the sentence focuses on what happened to the claim, not on who rejected it.

Greek often uses the passive here for the same reason English does:

• Η αίτηση αποζημίωσης απορρίφθηκε. = The compensation claim was rejected.

This keeps the focus on the claim itself, and the person or organization doing the rejecting is either:

• unknown,
• obvious from context,
• or not important.

An active version would need an agent, for example:

• Η εταιρεία απέρριψε την αίτηση αποζημίωσης. = The company rejected the compensation claim.

So the passive is very natural in formal, bureaucratic, legal, or insurance-related language.

Because εξαιτίας means because of / due to, and it is followed by the genitive.

So:

• εξαιτίας = because of
• της φθοράς = of the wear / damage / deterioration

That is why φθορά changes to φθοράς, and the article becomes της.

This pattern is standard:

• εξαιτίας του καιρού = because of the weather
• εξαιτίας της βροχής = because of the rain
• εξαιτίας των προβλημάτων = because of the problems

Because after εξαιτίας, the noun must be in the genitive, not the nominative.

Compare:

• η φθορά = the wear / the damage (nominative, dictionary/basic subject form)
• της φθοράς = of the wear / of the damage (genitive)

So:

• εξαιτίας της φθοράς = because of the wear/damage

This is not optional; it is required by εξαιτίας.

Φθορά can mean several related things depending on context:

• wear
• wear and tear
• damage
• deterioration
• decay

In an insurance or compensation context, it often suggests wear, deterioration, or damage caused by use or age, not necessarily sudden destruction.

So the sentence may imply something like:

• the claim was rejected because the problem was considered wear and tear rather than something compensable.

Context determines the best English word.

Yes, εξαιτίας is somewhat formal or neutral-formal. It is very common in writing, official statements, news, and administrative language.

In everyday speech, people might also use:

• λόγω = due to
• επειδή = because
• από in some contexts

But in a sentence like this, εξαιτίας της φθοράς sounds very natural and appropriate, especially in formal or written Greek.

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

This sentence:

• Η αίτηση αποζημίωσης απορρίφθηκε εξαιτίας της φθοράς.

could also appear as:

• Απορρίφθηκε η αίτηση αποζημίωσης εξαιτίας της φθοράς.

Both are grammatical. The difference is mainly one of focus or style, not basic meaning.

The original version begins with the subject:

• Η αίτηση αποζημίωσης
  which makes it feel straightforward and formal.

Yes, very much so. The vocabulary and structure sound like something from:

• an insurance company
• a legal document
• an official letter
• an administrative decision

The reasons are:

• αίτηση αποζημίωσης is formal/legal vocabulary
• απορρίφθηκε is a formal passive form
• εξαιτίας της φθοράς sounds official and impersonal

A more casual conversation might use simpler wording, but this sentence is perfectly natural in formal Greek.

Yes. Both can work, depending on context.

Possible translations include:

• compensation claim
• claim for compensation
• request for compensation

The best choice depends on the situation:

• If this is insurance/legal context, compensation claim is usually best.
• If it is more general or administrative, request for compensation may fit.

So the Greek itself allows a little flexibility in translation.