Εξοφλώ τον λογαριασμό σήμερα.

Εξοφλώ usually means pay off, settle in full, or clear a debt/bill.

So in this sentence, it suggests not just making a payment, but finishing the payment of the bill/account.

By contrast, πληρώνω is the more general verb to pay.

• Πληρώνω τον λογαριασμό = I pay the bill
• Εξοφλώ τον λογαριασμό = I pay off / settle the bill completely

In many everyday situations, the two can overlap, but εξοφλώ sounds a bit more specific and final.

Εξοφλώ is:

• 1st person singular
• present tense
• active voice

So it means I pay off or I am paying off, depending on context.

The ending -ώ is a common present-tense ending for this type of verb.

A few related forms are:

• εξοφλώ = I pay off
• εξοφλείς = you pay off
• εξοφλεί = he/she/it pays off
• εξοφλούμε = we pay off
• εξοφλείτε = you pay off
• εξοφλούν(ε) = they pay off

Greek often drops subject pronouns when they are not needed, because the verb ending already shows the subject.

Here, εξοφλώ already means I pay off, so εγώ is unnecessary.

You could say:

• Εγώ εξοφλώ τον λογαριασμό σήμερα

but that would usually add emphasis, something like:

• I’m the one paying the bill today
• I am paying it today

So the sentence without εγώ is the normal, natural version.

Because τον λογαριασμό is the direct object of the verb.

The verb εξοφλώ takes an object: you pay off something.
That object must be in the accusative case in Greek.

So:

• ο λογαριασμός = the bill/account (nominative, subject form)
• τον λογαριασμό = the bill/account (accusative, object form)

Compare:

• Ο λογαριασμός είναι ακριβός. = The bill is expensive.
  Here it is the subject, so ο λογαριασμός.

• Εξοφλώ τον λογαριασμό. = I pay off the bill.
  Here it is the object, so τον λογαριασμό.

This is a normal masculine noun pattern in Greek.

Many masculine nouns ending in -ος change in the accusative singular:

• ο λογαριασμός → τον λογαριασμό
• ο φίλος → τον φίλο
• ο δρόμος → τον δρόμο

So the final -ς disappears, and the ending changes to -ο.

This is not something special about this word only; it is part of a very common declension pattern.

In this sentence, λογαριασμός most naturally means:

• bill
• invoice
• sometimes account, depending on context

This word is quite flexible in Greek. It can mean:

• a restaurant bill
• a utility bill
• a financial account
• even a calculation in some contexts

But with εξοφλώ, the sense is usually bill / amount owed / account to be settled.

Yes, Greek word order is fairly flexible, and σήμερα can move depending on emphasis.

The original sentence:

• Εξοφλώ τον λογαριασμό σήμερα.

is completely natural.

You could also say:

• Σήμερα εξοφλώ τον λογαριασμό.
• Τον λογαριασμό εξοφλώ σήμερα.

These all mean basically the same thing, but the emphasis shifts a little:

• Σήμερα εξοφλώ τον λογαριασμό gives more emphasis to today
• Τον λογαριασμό εξοφλώ σήμερα gives more emphasis to the bill

For a learner, the original order is a very good neutral pattern.

Grammatically, εξοφλώ is a present form, so the basic meaning is present:

• I pay off / I am paying off the bill today

But in real usage, Greek present forms can sometimes sound like a scheduled or intended action, especially with time words like σήμερα.

If you want to make the future meaning completely clear, Greek usually uses θα:

• Θα εξοφλήσω τον λογαριασμό σήμερα. = I will pay off the bill today.

So:

• Εξοφλώ τον λογαριασμό σήμερα = present, or sometimes present with a practical/today sense
• Θα εξοφλήσω τον λογαριασμό σήμερα = clearly future

A simple pronunciation guide is:

ek-so-FLO ton lo-ga-ria-SMO SI-me-ra

A few helpful points:

• ξ sounds like ks
• φ sounds like f
• ώ / ό / ή show the stressed syllable
• γ in λογαριασμό is not a hard English g; it is softer, a Greek sound

The main stresses are:

• εξοφλώ
• λογαριασμό
• σήμερα

Getting the stress in the right place matters a lot in Greek.

Yes, they do.

In Modern Greek, the accent mark shows which syllable is stressed. That is important for correct pronunciation.

In this sentence:

• Εξοφλώ → stress on the last syllable
• λογαριασμό → stress on the last syllable
• σήμερα → stress on the first syllable

If you put the stress in the wrong place, your Greek may sound unnatural or be harder to understand.

So even if you already know the meaning, it is worth learning the word together with its stress.

Usually, no—not in this sentence as it stands.

Τον is the masculine singular accusative definite article, so it means the.

• τον λογαριασμό = the bill
• έναν λογαριασμό = a bill

If you removed the article entirely, the sentence would sound incomplete or unnatural in ordinary Greek:

• Εξοφλώ λογαριασμό σήμερα → not the normal phrasing

So if you mean a specific bill, τον λογαριασμό is the correct form.

You simply add δεν before the verb:

• Δεν εξοφλώ τον λογαριασμό σήμερα.

That means:

• I’m not paying off the bill today
• I do not pay off the bill today

This is the standard way to negate a present-tense verb in Modern Greek.