Έγραψα καθαρά το όνομα του παραλήπτη πάνω στο κουτί, για να μην υπάρξει λάθος.

Έγραψα is the aorist form of γράφω (to write). Here it means I wrote as a completed action in the past.

Greek often uses the aorist when you are talking about a single finished action, without focusing on its duration. So:

• έγραψα = I wrote / I wrote down
• έγραφα = I was writing / I used to write

In this sentence, the speaker is describing one completed act of writing the name on the box, so Έγραψα is the natural choice.

Greek usually does not need subject pronouns, because the verb ending already shows the subject.

• έγραψα = I wrote
• έγραψες = you wrote
• έγραψε = he/she/it wrote

So εγώ is usually omitted unless you want emphasis or contrast, for example:

• Εγώ έγραψα, όχι εκείνος = I wrote it, not him

In your sentence, no emphasis is needed, so just Έγραψα is perfectly normal.

Here καθαρά means clearly, more specifically legibly.

It comes from καθαρός (clean, clear), but in this sentence it is being used as an adverb, describing how the name was written.

So:

• γράφω καθαρά = I write clearly / legibly
• not literally cleanly in the physical sense

A native-English-speaking learner might expect something like clearly, and that is the right idea here.

Because it describes the verb Έγραψα (I wrote), not a noun.

Compare:

• καθαρό όνομα would be odd here, because that would mean something like a clean/clear name
• έγραψα καθαρά means I wrote clearly

In Greek, many adverbs have the same form as the neuter singular adjective, and καθαρά is one of those cases.

Greek uses the definite article very often, much more regularly than English.

Here το όνομα means the name, and it is the direct object of Έγραψα. Greek normally includes the article with nouns in many places where English may sound more flexible.

So:

• το όνομα = the name
• όνομα without an article is possible in some contexts, but it would sound less natural here

In this sentence, το όνομα του παραλήπτη is the normal way to say the recipient’s name.

Του παραλήπτη is in the genitive case. It shows possession or close relationship.

So:

• το όνομα = the name
• του παραλήπτη = of the recipient

Together:

• το όνομα του παραλήπτη = the recipient’s name / literally the name of the recipient

This is one of the most common uses of the genitive in Greek.

Παραλήπτης means recipient, the person who is supposed to receive something, especially in contexts like mail, parcels, deliveries, or official documents.

It is a masculine noun:

• nominative: ο παραλήπτης
• genitive: του παραλήπτη

In this sentence, since it follows όνομα and shows possession, it appears in the genitive: του παραλήπτη.

Στο is the contracted form of σε το.

• σε = in, at, on, to
• το = the
• σε το → στο

So:

• πάνω στο κουτί = on the box
• literally something like up/on the box

Πάνω means on top / above / on, and with στο κουτί it gives the idea that the name was written on the surface of the box.

Yes.

• επάνω στο κουτί is a slightly fuller version of πάνω στο κουτί
• πάνω σε ένα κουτί = on a box

The exact form depends on whether you mean the box or a box, and on style. In your sentence, πάνω στο κουτί is very natural and everyday Greek.

Για να introduces a purpose clause. It means:

• so that
• in order to
• so as to

In this sentence:

• για να μην υπάρξει λάθος = so that there would not be a mistake / to avoid a mistake

After για να, Greek normally uses the subjunctive, not an infinitive like English often does.

Because υπάρξει is in the subjunctive, and the normal negative particle for the subjunctive is μη(ν), not δεν.

A very useful rule is:

• δεν negates the indicative
• μη(ν) negates the subjunctive, imperative-like expressions, and certain non-indicative structures

So after για να, you use:

• για να υπάρξει
• για να μην υπάρξει

not για να δεν υπάρξει

Υπάρξει is the aorist subjunctive of υπάρχω (to exist, to be, to occur).

Here it means something like:

• for there to be
• for there to occur
• for a mistake to happen

So:

• για να μην υπάρξει λάθος = so that there would be no mistake / so that no mistake would occur

Greek often uses υπάρχω in this kind of formal or neutral wording.

Because Greek often leaves out the article when talking about something indefinite or general in this kind of expression.

So:

• να μην υπάρξει λάθος = so that there won’t be a mistake / so that no mistake occurs

If you said το λάθος, that would sound like a specific mistake already known in the context:

• το λάθος = the mistake

But here the meaning is general: any mistake, an error of any kind. So λάθος without the article is the natural choice.

Here it is a noun meaning mistake or error.

In other contexts, λάθος can also be used in expressions meaning wrongly or by mistake, for example:

• Έκανα λάθος = I made a mistake / I was wrong
• Το έστειλα λάθος = I sent it incorrectly / to the wrong place

But in your sentence, υπάρξει λάθος clearly shows that λάθος is a noun: a mistake may occur.

Yes, Greek word order is more flexible than English word order, because case endings and verb forms already show the grammatical relationships.

Your sentence is perfectly natural:

• Έγραψα καθαρά το όνομα του παραλήπτη πάνω στο κουτί, για να μην υπάρξει λάθος.

But other orders are possible, with slightly different emphasis. For example:

• Το όνομα του παραλήπτη το έγραψα καθαρά πάνω στο κουτί...
• Πάνω στο κουτί έγραψα καθαρά το όνομα του παραλήπτη...

The original version is straightforward and neutral.

Yes, that is a very natural English rendering.

The Greek structure is slightly different from typical English, especially in the last part:

• για να μην υπάρξει λάθος = literally so that no mistake may occur

But in natural English, you might say:

• to avoid any mistake
• so there wouldn’t be any mistake
• so that no mistake would be made
• to prevent any confusion

So even though the Greek wording is different, the idea is the same.