Δεν μπορώ να πάρω απόφαση τώρα, γιατί είμαι πολύ κουρασμένος.

Greek often expresses can with μπορώ + να + a verb.

So:

• μπορώ = I can / I am able
• να πάρω = to take / to make (in this context)

Literally, Δεν μπορώ να πάρω απόφαση is something like I can’t take a decision. That is a natural Greek way to say I can’t make up my mind / I can’t make a decision.

Greek often uses multi-word verb patterns where English might prefer a single verb.

This is a very common Greek question, because it involves aspect.

• να πάρω = aorist form, used for a single, complete action
• να παίρνω = imperfective/present form, used for repeated, ongoing, or habitual action

Here, making a decision is viewed as one complete action, so Greek uses:

• να πάρω απόφαση

If you said να παίρνω απόφαση, it would sound more like to be making decisions regularly or to keep deciding, which is not the idea here.

In modern Greek grammar, after να, the verb is usually described as being in the subjunctive environment.

So in:

• να πάρω

πάρω is the form used after να. It comes from the verb παίρνω (to take).

A very useful pattern to remember is:

• μπορώ να + verb
• θέλω να + verb
• πρέπει να + verb

Examples:

• Μπορώ να φύγω. = I can leave.
• Θέλω να φάω. = I want to eat.
• Πρέπει να μιλήσω. = I must speak.

Παίρνω απόφαση is an idiomatic expression meaning:

• to make a decision
• to come to a decision
• sometimes to make up one’s mind

Word for word, it is:

• παίρνω = I take
• απόφαση = decision

So Greek says take a decision, where English usually says make a decision.

A very common variation is:

• παίρνω μια απόφαση = I make a decision

In your sentence, the article is simply omitted, which is also natural.

Yes. That would also be perfectly natural.

• Δεν μπορώ να αποφασίσω τώρα. = I can’t decide now.

This version uses the verb αποφασίζω (to decide), while your sentence uses the expression παίρνω απόφαση (make a decision).

Both are common. The version with παίρνω απόφαση can sound a little more like come to a decision / make up my mind.

Because this is a statement of negation, not a command.

• Δεν is used to negate indicative-style statements:

  • Δεν μπορώ = I cannot / I can’t

• Μην is mainly used with prohibitions or negative subjunctive commands:

  • Μην πας! = Don’t go!
  • Μην το κάνεις. = Don’t do it.

So here, since the speaker is simply stating a fact, Δεν is the correct negative word.

Greek usually does not need subject pronouns unless there is emphasis or contrast, because the verb ending already shows the subject.

For example:

• μπορώ = I can
• είμαι = I am

So Δεν μπορώ... γιατί είμαι... already clearly means I can’t... because I am...

You could add εγώ for emphasis:

• Εγώ δεν μπορώ να πάρω απόφαση τώρα...

That sounds more like I can’t decide now (maybe someone else can).

Both are possible.

• να πάρω απόφαση
• να πάρω μια απόφαση

The version without μια is very common in fixed expressions and can feel slightly more general or idiomatic.

Compare:

• Πρέπει να πάρω απόφαση. = I need to make a decision.
• Πρέπει να πάρω μια απόφαση. = I need to make a decision.

The second one may feel a bit more explicit, but both are natural.

γιατί can mean both why? and because, depending on context.

In your sentence:

• γιατί είμαι πολύ κουρασμένος
• because I am very tired

Here it introduces a reason, so it means because.

As a question word, it can mean why:

• Γιατί έφυγες; = Why did you leave?

So the meaning depends on how it is used in the sentence.

Κουρασμένος is the normal adjective meaning tired. It comes from the verb κουράζω / κουράζομαι (to tire / to get tired), but in this sentence it functions simply as an adjective.

The structure is:

• είμαι κουρασμένος = I am tired

This is very natural Greek.

Because the adjective agrees with the speaker’s gender.

If the speaker is male:

• είμαι πολύ κουρασμένος

If the speaker is female:

• είμαι πολύ κουρασμένη

This is an important feature of Greek: adjectives often change form to agree with gender and number.

Πολύ means very here.

So:

• πολύ κουρασμένος = very tired

It comes before the adjective it modifies, just as very usually does in English.

Examples:

• πολύ καλός = very good
• πολύ δύσκολο = very difficult
• πολύ αργά = very late

Τώρα means now, and Greek word order is often more flexible than English word order.

In this sentence:

• Δεν μπορώ να πάρω απόφαση τώρα

τώρα naturally modifies the whole idea of deciding. It is placed after απόφαση, which sounds completely normal.

You could also hear slight variations depending on emphasis, for example:

• Τώρα δεν μπορώ να πάρω απόφαση.
• Δεν μπορώ τώρα να πάρω απόφαση.

All are possible, but the original sentence sounds natural and neutral.

No, not completely. Greek word order is flexible, though not random. Speakers move words around for emphasis, rhythm, or style.

The given version is a neutral, natural sentence.

Possible variations include:

• Δεν μπορώ τώρα να πάρω απόφαση, γιατί είμαι πολύ κουρασμένος.
• Γιατί είμαι πολύ κουρασμένος, δεν μπορώ να πάρω απόφαση τώρα.

These versions shift emphasis a bit, but the core meaning stays the same.

Only the adjective would need to change:

• Δεν μπορώ να πάρω απόφαση τώρα, γιατί είμαι πολύ κουρασμένη.

Everything else stays the same.

So:

• male speaker: κουρασμένος
• female speaker: κουρασμένη

It is neutral and natural in everyday Greek. It is neither especially formal nor especially slangy.

You could say it:

• in normal conversation
• in a message
• in many everyday situations

A slightly shorter, equally natural version would be:

• Δεν μπορώ να αποφασίσω τώρα, γιατί είμαι πολύ κουρασμένος.

Both are standard modern Greek.