Αν ξεχάσεις τον κωδικό σου, η εφαρμογή δεν ανοίγει.

If you forget your password, the app doesn’t open.

Breakdown of Αν ξεχάσεις τον κωδικό σου, η εφαρμογή δεν ανοίγει.

• δεν: not
• σου: your
• αν: if
• ανοίγω: to open
• ξεχνάω: to forget
• ο κωδικός: the password
• η εφαρμογή: the app

Questions & Answers about Αν ξεχάσεις τον κωδικό σου, η εφαρμογή δεν ανοίγει.

What does Αν mean here, and how is it different from Εάν?

Αν means if.

In modern spoken Greek:

• Αν and Εάν are practically the same in meaning.
• Εάν is a bit more formal or written; Αν is what you’ll hear most of the time in everyday speech.

Both introduce a condition, like English if:

• Αν ξεχάσεις τον κωδικό σου… = If you forget your password…

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Why is it ξεχάσεις and not something like ξεχνάς?

Ξεχάσεις is the aorist subjunctive, 2nd person singular of ξεχνάω / ξεχνώ (to forget).

Greek often uses the aorist subjunctive after αν for possible future events:

• Αν ξεχάσεις = If you (ever / at some moment) forget
• Αν ξεχνάς would sound like “if you are (habitually) forgetful / if you keep forgetting,” which is a different idea.

So:

• Αν ξεχάσεις τον κωδικό σου = If you forget your password (on a specific occasion)
• Αν ξεχνάς τον κωδικό σου = If you (tend to) forget your password (as a habit/personality trait)

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What tense is ξεχάσεις, and why is the subjunctive used?

Ξεχάσεις is:

• Aorist subjunctive
• 2nd person singular

In Greek, after αν in conditional sentences, the verb is typically in the subjunctive to express:

• Uncertainty
• Possibility
• A future event that may or may not happen

So:

• Αν ξεχάσεις… = If you (should) forget… / In case you forget…

The aorist aspect here focuses on the event as a whole, not on duration or repetition.

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Why is it τον κωδικό σου and not just κωδικό σου without the article?

Greek almost always uses a definite article where English might not.

• τον κωδικό σου literally: the password of yours
  but it means: your password

Saying just κωδικό σου (without τον) is normally wrong in standard Greek in this position. With singular countable nouns, you almost always need the article when referring to a specific, known thing:

• το βιβλίο μου = my book
• η τσάντα σου = your bag
• τον κωδικό σου = your password

So the article τον is required here.

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Why is σου after κωδικό and not before, like σου κωδικό?

In Greek, possessive pronouns like μου, σου, του, της, μας, σας, τους usually come after the noun:

• ο φίλος μου = my friend
• η δουλειά σου = your job
• τον κωδικό σου = your password

Putting σου before the noun (σου κωδικό) is ungrammatical in this structure.

So the normal pattern is:

article + noun + possessive
→ τον κωδικό σου

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Why is it η εφαρμογή δεν ανοίγει (present tense) and not η εφαρμογή δεν θα ανοίξει (future)?

Δεν ανοίγει is present tense, but here it has a general / habitual meaning:

• Αν ξεχάσεις τον κωδικό σου, η εφαρμογή δεν ανοίγει.
  = If you forget your password, the app (generally / in that situation) doesn’t open.

Greek often uses the present tense to express:

• General truths
• Regular results
• Rules and instructions

If you say:

• η εφαρμογή δεν θα ανοίξει = the app will not open (on that particular occasion)

That is also possible and correct, but it sounds more like one specific future event.
The given sentence sounds more like a rule or system behavior in general.

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Could you also say η εφαρμογή δεν θα ανοίγει? How would that differ?

Η εφαρμογή δεν θα ανοίγει is grammatically possible, but:

• δεν θα ανοίξει (simple future) → a specific result: it will not open (that time)
• δεν θα ανοίγει (future continuous) → more like a repeated / ongoing situation: it will be not opening, it won’t be opening (habitually)

In practice:

• For a straightforward condition–result rule, Greek would prefer either:
  • η εφαρμογή δεν ανοίγει (present, general rule)
  • η εφαρμογή δεν θα ανοίξει (simple future result of that condition)

Δεν θα ανοίγει is less natural here unless you’re emphasizing ongoing or repeated failure over a period of time.

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Why is there no subject pronoun εσύ in Αν ξεχάσεις τον κωδικό σου?

Greek is a pro-drop language: subject pronouns are usually omitted because the verb ending already shows the person.

• ξεχάσεις clearly indicates “you (singular)”.

• Adding εσύ (you) is only needed for emphasis or contrast:

  • Αν εσύ ξεχάσεις τον κωδικό σου…
    = If you forget your password (as opposed to someone else)

In a neutral sentence like this, εσύ is normally omitted.

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What gender is κωδικός, and how can I see that in the sentence?

Κωδικός (code / password) is masculine.

You can see this from the article and the ending:

• τον = masculine singular accusative article
• κωδικό = accusative singular of κωδικός

So:

• ο κωδικός (nominative, subject) = the code / the password
• τον κωδικό (accusative, object) = the code / the password

In the sentence, τον κωδικό σου is the object of ξεχάσεις.

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Why is it η εφαρμογή and not another word for “application” like αίτηση?

Greek has two common words that can both appear as “application” in English, but they mean different things:

• η εφαρμογή
  
  • software / app
  • a program on a phone, computer, etc.
• η αίτηση
  
  • an application form / request
  • e.g. a job application, a visa application

Here we’re talking about an app that opens or doesn’t open, so η εφαρμογή is correct:

• η εφαρμογή δεν ανοίγει = the app doesn’t open.

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What does δεν ανοίγει literally mean, and is the verb ανοίγω used like English “open”?

Δεν ανοίγει literally means “(it) does not open.”

• ανοίγω = to open
• ανοίγει = he/she/it opens

It works similarly to English:

• Ανοίγω την πόρτα. = I open the door.
• Η πόρτα ανοίγει. = The door opens.
• Η εφαρμογή δεν ανοίγει. = The app doesn’t open.

So using ανοίγει with η εφαρμογή is natural Greek for software not starting or not loading.