Όσον αφορά την κοινοποίηση, η απόφαση επί της ένστασης αργεί.

Όσον αφορά means as regards, regarding, or with respect to. It is a fixed expression used to introduce a topic.

In this sentence:

Όσον αφορά την κοινοποίηση, ...
= As regards the notification/service, ...

A learner does not need to analyze it word by word every time; it is best learned as a set phrase. It is common in formal and semi-formal Greek, especially in administrative or legal language.

A more everyday alternative could be σχετικά με or όσο για, depending on the tone.

It is την κοινοποίηση because Όσον αφορά is followed by the accusative.

So:

• Όσον αφορά την κοινοποίηση
• Όσον αφορά το θέμα
• Όσον αφορά τις αιτήσεις

This is something worth memorizing as part of the expression:
Όσον αφορά + accusative

Here, κοινοποίηση is feminine singular, so the accusative form with the article is την κοινοποίηση.

In general, κοινοποίηση means notification, communication, or making something known.

In legal or administrative contexts, it often has a more specific meaning such as:

• official notification
• service of a document
• formal delivery/communication of a decision

So in this sentence, it probably does not mean casual sharing or telling people, but rather a formal legal/administrative notification/service.

The comma separates the introductory topic phrase from the main clause.

So the structure is:

• Όσον αφορά την κοινοποίηση, = introductory frame/topic
• η απόφαση επί της ένστασης αργεί. = main statement

This is very natural in English too:

• As for the notification, the decision on the objection is delayed.

The comma helps signal that the first part sets the topic.

Η απόφαση is the subject of the verb αργεί.

• η = feminine singular nominative article
• απόφαση = decision

So:

• η απόφαση αργεί = the decision is delayed / the decision is taking a long time

Greek marks the subject with the nominative, and here απόφαση is a feminine noun, so it takes η in the nominative singular.

Επί της ένστασης means on the objection, regarding the objection, or concerning the objection.

In legal and formal Greek, απόφαση επί της ένστασης is a very typical expression meaning:

• decision on the objection
• decision regarding the appeal/objection

This is not the most conversational way to say it; it sounds formal, administrative, and legal.

Here επί is used in a formal/legal sense and takes the genitive.

So:

• επί της ένστασης
• not επί την ένσταση

This use of επί + genitive often means something like:

• concerning
• with regard to
• on

It is especially common in official language. In everyday speech, learners are more likely to meet other ways of expressing this idea, but in formal texts this construction is very common.

Ένσταση usually means objection.

Depending on context, it can also be translated as:

• formal objection
• challenge
• sometimes appeal or complaint, if the legal system uses it that way

The exact English word depends on the legal or administrative context, but the core idea is that someone has formally objected or challenged something.

Yes, αργεί literally comes from the idea of being late, taking too long, or delaying.

In this sentence:

η απόφαση επί της ένστασης αργεί
means something like:

• the decision on the objection is delayed
• the decision on the objection is taking a long time
• the decision on the objection is late

So it is not necessarily saying that the decision itself is physically moving slowly; it means the decision has not arrived or been issued as quickly as expected.

The verb is singular because the subject is singular:

• η απόφαση = the decision

So the verb agrees with the subject:

• η απόφαση αργεί = singular
• οι αποφάσεις αργούν = plural

This is standard subject-verb agreement in Greek.

The word order is natural and quite formal:

Όσον αφορά την κοινοποίηση, η απόφαση επί της ένστασης αργεί.

A rough structure is:

1. topic-setting phrase: Όσον αφορά την κοινοποίηση
2. subject: η απόφαση
3. modifier of the subject: επί της ένστασης
4. verb: αργεί

Greek word order is more flexible than English, but this order sounds clear and official. A different order might be possible, but this version is very typical of bureaucratic or legal writing.

Yes, very formal.

Several features make it sound official or bureaucratic:

• Όσον αφορά instead of a more everyday expression
• κοινοποίηση in a legal/administrative sense
• επί της ένστασης, which is especially formal
• the overall impersonal style

In everyday speech, someone might say something simpler, but this sentence sounds like it comes from an official letter, legal note, or administrative communication.

Yes. A simpler, less formal version could be something like:

• Σχετικά με την κοινοποίηση, η απόφαση για την ένσταση αργεί.
• Όσο για την κοινοποίηση, η απόφαση για την ένσταση καθυστερεί.

These are not identical in tone, but they are easier for learners to process.

Compared with the original:

• Όσον αφορά is more formal than σχετικά με or όσο για
• επί της ένστασης is more formal than για την ένσταση
• αργεί and καθυστερεί are close here, though καθυστερεί often feels more directly like is delayed

Yes. A learner would benefit from memorizing these chunks:

• Όσον αφορά + accusative = as regards / with regard to
• κοινοποίηση = notification / service in formal contexts
• απόφαση επί της ένστασης = decision on the objection
• αργεί = is late / is delayed / is taking a long time

This helps because the sentence is made up of several common formal expressions rather than only basic everyday grammar.