Ο λογαριασμός είναι πληρωτέος.

Ο is the definite article in Greek, meaning the.

Here it is:

• masculine
• singular
• nominative

It matches λογαριασμός, which is a masculine singular noun.

So:

• ο λογαριασμός = the bill / the account

Greek uses articles more regularly than English in many cases, so leaving it out would usually sound unnatural here.

In Greek, every noun has a grammatical gender: masculine, feminine, or neuter.
Λογαριασμός happens to be masculine.

That is why it takes:

• the article ο
• the adjective ending -ος in πληρωτέος

This is grammatical gender, not biological gender. A thing like a bill can still be masculine as a noun.

Είναι is the 3rd person singular form of είμαι, which means to be.

So it means:

• he is
• she is
• it is

In this sentence, it means is because the subject is ο λογαριασμός.

A useful point: είναι is also used for they are, so context tells you whether it is singular or plural.

Because it is an adjective that must agree with λογαριασμός.

Since λογαριασμός is:

• masculine
• singular
• nominative

the adjective also becomes:

• masculine
• singular
• nominative

So we get:

• πληρωτέος

Compare the agreement pattern:

• masculine: πληρωτέος
• feminine: πληρωτέα
• neuter: πληρωτέο

This agreement is a very important feature of Greek grammar.

Πληρωτέος is a fairly formal adjective meaning something like:

• payable
• due to be paid
• to be paid

It comes from the verb πληρώνω = to pay.

This type of word is common in formal, business, legal, or administrative Greek. It often describes something that must or should be paid.

So grammatically, it is an adjective, but semantically it has a slightly official tone.

It is grammatical and understandable, but it sounds formal or bureaucratic.

You are likely to see πληρωτέος in:

• bills
• invoices
• banking language
• official documents
• accounting contexts

In everyday speech, people might more often say:

• Ο λογαριασμός πρέπει να πληρωθεί. = The bill must be paid.
• Πρέπει να πληρώσω τον λογαριασμό. = I have to pay the bill.

So the original sentence is natural, but especially in a formal or written context.

A simple pronunciation guide is:

O logariasmós íne plirotéos

A few notes:

• λογαριασμός has the stress on the last syllable: -μός
• είναι is usually pronounced roughly Íne
• πληρωτέος has the stress on τέ

More roughly, you could say:

• o lo-ga-riaz-MOS I-ne plee-ro-TE-os

The Greek ρ is a rolled or tapped r, not the English r.

Yes, Greek word order is more flexible than English, because the endings show the grammatical relationships more clearly.

The neutral, standard order is:

• Ο λογαριασμός είναι πληρωτέος.

But you could also find:

• Πληρωτέος είναι ο λογαριασμός.

That version gives more emphasis to πληρωτέος.

Even so, for a learner, the original order is the safest and most natural one to produce first.

Yes. Λογαριασμός is a very common Greek word with several related meanings depending on context, such as:

• bill
• account
• bank account
• tab
• calculation

In this sentence, because of πληρωτέος, it most naturally means something like:

• bill
• invoice
• account payable

So the exact English translation depends on the situation.

Normally, no. That would sound unnatural in standard Greek.

Greek usually wants the article here because you are talking about a specific noun:

• ο λογαριασμός = the bill

Without the article, the sentence sounds incomplete or odd in ordinary usage.

So for learners, the correct version to remember is:

• Ο λογαριασμός είναι πληρωτέος.

These words are related, but they do not mean the same thing.

• πληρωτέος = payable / due to be paid
• πληρωμένος = paid
• απλήρωτος = unpaid

So:

• Ο λογαριασμός είναι πληρωτέος. = The bill is payable / due.
• Ο λογαριασμός είναι πληρωμένος. = The bill has been paid.
• Ο λογαριασμός είναι απλήρωτος. = The bill is unpaid.

This is an important distinction, especially in financial or administrative Greek.

If the noun becomes plural, the adjective must also become plural.

Singular:

• Ο λογαριασμός είναι πληρωτέος.

Plural:

• Οι λογαριασμοί είναι πληρωτέοι.

Changes:

• ο → οι
• λογαριασμός → λογαριασμοί
• πληρωτέος → πληρωτέοι

Again, this shows adjective agreement in Greek.

The accent marks show which syllable is stressed.

In this sentence:

• λογαριασμός → stress on -μός
• είναι → stress on εί
• πληρωτέος → stress on τέ

Stress matters in Greek pronunciation and is always written in standard spelling.

So the accents are not optional decoration. They are a real part of the written language and help you pronounce the words correctly.