Indefinite Articles in Greek

In Brief

Greek uses ένας with masculine nouns, μία/μια with feminine nouns, and ένα with neuter nouns: ένας άντρας, μια γυναίκα, ένα παιδί. These forms can mean either English “a/an” or the number “one,” and they change according to the noun’s case—its grammatical role in the sentence. Unlike English, Greek has no plural indefinite article.

Overview

The Greek indefinite article is ένας, μία/μια, ένα. It introduces one person or thing that is not yet identified: ένα βιβλίο can mean “a book.” The same set of words is also the cardinal number “one”: ένα βιβλίο, όχι δύο means “one book, not two.” Context and emphasis usually make the intended meaning clear.

This is an A1 topic, but it brings together two central features of Greek. First, every noun (a word for a person, place, thing, or idea) belongs to one of three grammatical genders: masculine, feminine, or neuter. Second, Greek marks case, which means that a noun phrase changes form according to the job it performs. The article therefore agrees with its noun in gender and case.

English learners need to resist two habits. You cannot choose between Greek forms by translating “a” versus “an”: the English sound rule has no equivalent here. You must know the Greek noun’s gender. You also cannot insert the article everywhere English uses “a,” because Greek commonly leaves it out with professions, roles, general plurals, and uncountable substances.

How It Works

The beginner rule: match the noun’s gender

Learn a new noun together with its definite article—ο, η, or το. That article reveals the gender and tells you which indefinite form to use.

Gender	Definite form used to learn the noun	Indefinite article	Example	Meaning
Masculine	ο	ένας	ένας άντρας	a man / one man
Feminine	η	μία or μια	μία γυναίκα	a woman / one woman
Neuter	το	ένα	ένα παιδί	a child / one child

The noun ending often gives a clue, but it is not a perfect guide. For example, ο άντρας is masculine, η γυναίκα is feminine, and το βιβλίο is neuter. Memorising the definite article with each noun is safer than guessing from the ending.

Greek does not distinguish “a” from “an.” The next sound makes no difference:

• ένας φίλος — a friend
• ένας άνθρωπος — a person
• μια ιδέα — an idea
• ένα αυτοκίνητο — a car

Full singular forms by case

The indefinite article has only singular forms. It declines much like an adjective—that is, its ending changes to match the gender and case of its noun.

Case	Masculine	Feminine	Neuter	Main job
Nominative	ένας	μία / μια	ένα	subject or naming form
Genitive	ενός	μίας / μιας	ενός	possession, relation, “of”
Accusative	έναν	μία / μια	ένα	direct object; form after most prepositions

There is no vocative form because the indefinite article is not used when directly calling or addressing someone.

Nominative: the subject or naming form

The subject is the person or thing that performs the action or is being described.

• Ένας άντρας περιμένει έξω. — A man is waiting outside.
• Μια γυναίκα τηλεφώνησε. — A woman called.
• Ένα παιδί παίζει στον κήπο. — A child is playing in the garden.

The nominative is also the form normally shown in vocabulary lists. However, after είμαι “to be,” Greek often omits the article before a profession, nationality, religion, or role: Είναι γιατρός means “She/He is a doctor.”

Accusative: objects and most prepositions

A direct object is the person or thing directly affected by the verb. Masculine ένας changes to έναν. Feminine μία/μια and neuter ένα look the same as in the nominative.

• Βλέπω έναν φίλο. — I see a friend.
• Αγοράζω μια εφημερίδα. — I am buying a newspaper.
• Θέλω ένα εισιτήριο. — I want a ticket.

Most common prepositions also take the accusative:

• με έναν φίλο — with a friend
• για μια εβδομάδα — for a week
• σε ένα ξενοδοχείο — in/at a hotel
• από μια μικρή πόλη — from a small town

Unlike σε plus a definite article (στον, στην, στο), σε does not contract with the indefinite article: write σε έναν, σε μια, σε ένα.

Genitive: possession and other “of” relationships

The genitive often expresses possession or a relationship that English shows with “of” or an apostrophe-s. The forms are ενός, μίας/μιας, ενός.

• το αυτοκίνητο ενός φίλου — a friend’s car
• η αρχή μιας ιστορίας — the beginning of a story
• η πόρτα ενός σπιτιού — the door of a house

The noun and any adjective must change too. It is not enough to change only the article: ενός καλού φίλου means “of a good friend.”

μία and μια

Both spellings are standard. Μια is extremely common when the word functions as the ordinary, usually unstressed article: μια καρέκλα “a chair.” Μία carries its written stress and is especially natural when “one” is being emphasised or contrasted: Μόνο μία ερώτηση “Only one question.”

The distinction is not absolute: speakers and writers may use μία as the article too. In the genitive, both μιας and μίας occur. For early production, μια as ordinary “a” and μία as emphatic “one” is a useful practical habit, not an unbreakable rule.

No plural indefinite article

English has no plural form of “a/an,” and neither does Greek. A bare plural noun can be indefinite:

• Αγόρασα βιβλία. — I bought books.
• Υπάρχουν εστιατόρια εδώ. — There are restaurants here.

For a more specific quantity, use a number or quantity word: δύο βιβλία “two books,” μερικοί φίλοι “some friends,” or πολλά προβλήματα “many problems.” Do not try to create a plural of ένας to mean “some.”

Examples in Context

Greek	English	Note
Ένας άντρας περιμένει στη στάση.	A man is waiting at the bus stop.	Masculine nominative subject
Μια γυναίκα ζητάει πληροφορίες.	A woman is asking for information.	Feminine nominative; ordinary μια
Ένα παιδί κοιμάται.	A child is sleeping.	Neuter nominative
Διαβάζω ένα βιβλίο.	I am reading a book.	Neuter accusative object
Ψάχνουμε έναν καλό γιατρό.	We are looking for a good doctor.	Masculine accusative; adjective agrees too
Θέλω μια μεγάλη σαλάτα.	I want a large salad.	Feminine accusative
Μένει με έναν φίλο του.	He is staying with a friend of his.	Accusative after με
Θα μείνουμε σε ένα μικρό ξενοδοχείο.	We will stay in a small hotel.	No contraction in σε ένα
Αυτό είναι το ποδήλατο ενός παιδιού.	This is a child’s bicycle.	Neuter genitive ενός
Άκουσα τη φωνή μιας γυναίκας.	I heard a woman’s voice.	Feminine genitive μιας
Έχω μόνο μία αδελφή.	I have only one sister.	μία stresses the number one
Ένα καφέ, παρακαλώ.	One coffee, please.	A common order; understood as one serving
Είναι μηχανικός.	She/He is an engineer.	No article with a profession after είμαι
Χρειάζομαι νερό.	I need water.	No article for an unspecified amount
Αγόρασαν καινούργια έπιπλα.	They bought new furniture.	Indefinite plural with no article

Common Mistakes

Choosing the article from the English word

• Wrong: μία βιβλίο
• Right: ένα βιβλίο
• Why: Greek agreement follows the gender of the Greek noun. Βιβλίο is neuter (το βιβλίο), regardless of how its English translation behaves.

Keeping ένας in an object phrase

• Wrong: Βλέπω ένας άντρας.
• Right: Βλέπω έναν άντρα.
• Why: The man is the direct object, so both article and noun take the accusative: έναν άντρα.

Changing the article but not the rest of the phrase

• Wrong: το σπίτι ενός καλός φίλος
• Right: το σπίτι ενός καλού φίλου
• Why: The article, adjective, and noun agree together. After ενός, “good friend” must also be genitive: καλού φίλου.

Using an article with a profession after είμαι

• Unnatural in the neutral meaning: Είμαι ένας δάσκαλος.
• Usual: Είμαι δάσκαλος.
• Why: Greek normally uses no article when simply stating a profession or role. Είμαι ένας δάσκαλος is possible only with extra force, such as “I am one teacher among others” or “I’m just a teacher.”

Contracting σε with the indefinite article

• Wrong: σ’ ένα ξενοδοχείο treated as a grammatical article contraction like στο
• Right in careful full form: σε ένα ξενοδοχείο
• Why: The grammatical contractions στον, στην, στο contain the definite article. In speech and informal writing, vowels may run together and σ’ ένα can occur, but it is not the same fixed article contraction as σε + το = στο.

Inventing a plural indefinite article

• Wrong: a plural form of ένας used to mean “some books”
• Right: βιβλία or μερικά βιβλία
• Why: The indefinite article is singular only. Use a bare plural or a quantity word.

Usage Notes

“A/an” versus “one”

Because the same forms do both jobs, emphasis matters. In neutral Έχω ένα αυτοκίνητο, the natural meaning may be “I have a car.” Add a contrast and the numeral meaning becomes clear: Έχω ένα αυτοκίνητο, όχι δύο—“I have one car, not two.” With feminine nouns, stressed μία makes that contrast especially visible.

When Greek prefers no article

Greek and English article choices overlap, but they are not identical. Greek commonly omits the indefinite article:

• with professions and roles after είμαι: Είναι φοιτήτρια — “She is a student”
• with uncountable material or substance nouns when no single portion is meant: Θέλω καφέ — “I want coffee”
• with indefinite plurals: Έχει φίλους στην Αθήνα — “He/She has friends in Athens”
• in some fixed labels, signs, and concise descriptions

By contrast, adding έναν/μια/ένα can present something as one countable individual, introduce it into a story, or emphasise its number. Compare Θέλω καφέ “I want coffee” with Θέλω έναν καφέ “I want a coffee,” meaning one cup or serving.

Position with adjectives

The normal order is article + adjective + noun:

• ένας καλός φίλος — a good friend
• μια όμορφη πόλη — a beautiful city
• ένα μικρό σπίτι — a small house

Greek can place an adjective after the noun in suitable contexts, but beginners should first master the common order and make all three words agree.

Beyond the Basics / Advanced Use

You do not need to master the details in this section at A1, but they explain forms you will meet later.

Indefinite article or numeral?

Grammatically, the indefinite article developed from and remains closely connected to the numeral “one.” Some descriptions of Greek therefore treat the two uses together. For learners, the useful distinction is semantic: an article-like use introduces an unspecified single member of a group, while a numeral use counts or contrasts it.

• Μπήκε ένας άντρας. — A man came in. The man has not yet been identified.
• Μπήκε ένας άντρας, όχι δύο. — One man came in, not two.

Stress, word order, words such as μόνο “only,” and the wider context signal the second use.

Expressive uses with names and descriptions

At a higher level, ένας/μια/ένα can do more than mark an unknown item. Before a famous name, it may suggest “someone like” that person: ένας νέος Πικάσο means “a new Picasso.” Before an evaluative noun phrase, it can classify somebody strongly: Είναι ένας πραγματικός φίλος—“He is a true friend.” Here the article is meaningful; it is not the neutral profession pattern seen in Είναι γιατρός.

The form can also introduce a person whose exact identity the speaker does not consider important: Τηλεφώνησε ένας κύριος—“A gentleman called.” Depending on tone and context, English might use “a,” “some,” or “a certain.” Greek also has κάποιος for “someone/some” when indefiniteness itself is prominent, so the two are not always interchangeable.

Article choice affects the viewpoint

Compare these three patterns:

• Πίνω καφέ. — I drink coffee / I am drinking coffee: substance or activity, no unit counted.
• Πίνω έναν καφέ. — I am having a coffee: one serving.
• Πίνω τον καφέ. — I am drinking the coffee: a specific, identifiable coffee.

This contrast—no article, indefinite article, definite article—is more useful than memorising a direct English substitution. It shows whether the speaker presents the noun as a general substance, one new countable item, or an identifiable item.

Variation in feminine forms

Both μια and μία belong to standard Modern Greek. Typography, rhythm, region, and personal style can affect which form appears. Do not “correct” every μία to μια or assume that every μία must be a numeral. Instead, notice whether the speaker is placing contrastive stress on “one.” The genitive alternatives μιας and μίας show the same broad relationship.

Practice Tips

1. Learn nouns in gender sets. Make three columns headed ο → ένας, η → μια, and το → ένα. Put each new noun in the right column: ο φίλος → ένας φίλος, η πόλη → μια πόλη, το σπίτι → ένα σπίτι.
2. Transform complete phrases, not isolated articles. Start with ένας καλός φίλος, then make an object phrase βλέπω έναν καλό φίλο and a possession phrase το σπίτι ενός καλού φίλου. This trains agreement across the entire noun phrase.
3. Practise the three-way meaning contrast. With everyday nouns, say a bare form, an indefinite form, and a definite form: καφές / ένας καφές / ο καφές. Explain aloud whether you mean coffee in general, one coffee, or a particular coffee.

Related Concepts

• Prerequisite: Noun Gender — learn how Greek nouns are classified as masculine, feminine, or neuter before choosing the article.
• Useful companion: Definite Articles — compare an unspecified “a/one” with a specific “the.”
• Next step: Case System Introduction — understand why ένας changes to ενός and έναν.
• Next step: Adjective Agreement — make the article, adjective, and noun agree as one phrase.
• Next step: Numbers and Time — build from “one” to the wider Greek number system.