The Vocative Case (Direct Address)

When you stop talking about someone and start talking to them — calling their name, getting their attention, addressing them politely — Greek puts the noun into a special form called the vocative. English has nothing like it: we call "John!" with exactly the word we'd use in "John left." Greek often changes the ending, and because English speakers have no such reflex, they routinely address people in the wrong form — a small error that instantly marks a sentence as non-native. This page shows you when the ending changes and when it doesn't.

The vocative is one of the four cases, but it behaves differently from the others in two ways: it takes no article at all (you say Γιάννη!, never ×ο Γιάννη!), and for many nouns it is simply identical to the nominative. The work is concentrated in the masculine.

Masculine common nouns in -ος → -ε

A masculine common noun ending in -ος replaces it with -ε when you address it: ο φίλος → φίλε, ο κύριος → κύριε, ο γιατρός → γιατρέ, ο άνθρωπος → άνθρωπε.

The single most useful one is κύριε ("sir"), the standard way to address a man you don't know — the waiter, the stranger, the official.

Masculine first names in -ος: common -ο, but also -ε

Here is the split that trips everyone up. Common nouns in -ος normally take -ε, while many high-frequency, especially short or familiar, masculine first names take -ο (the same form as the accusative): Γιώργος → Γιώργο, Νίκος → Νίκο, Πέτρος → Πέτρο, Παύλος → Παύλο.

So you call your friend Γιώργο but a stranger κύριε — even though both nouns end in -ος. A useful first rule is common short names often take -ο; common nouns and surnames take -ε. It is not a rule for every first name, however.

Many longer, especially proparoxytone, names have ordinary current vocatives in -ε: Αλέξανδρε, Στέφανε, Φίλιππε, Χριστόφορε. These are not ecclesiastical relics. Separately, learned vocatives of some short names survive in elevated or ecclesiastical language — Πέτρε, Παύλε beside neutral conversational Πέτρο, Παύλο. Stress shape is a useful clue, but names are lexical items, so learn the nominative and vocative together.

Masculine -ης → -η and -ας → -α

The other two masculine classes simply drop their final -ς, matching their accusative form:

• -ης → -η: Γιάννης → Γιάννη, Δημήτρης → Δημήτρη, ο μαθητής → μαθητή.
• -ας → -α: Θωμάς → Θωμά, Λουκάς → Λουκά, ο άντρας → άντρα.

That opening Έλα, [name]! ("come on / hey, …!") is one of the most common frames in spoken Greek for getting someone's attention, and the name after it must be in the vocative — Έλα, Γιάννη!, Έλα, Μαρία!

Feminine and neuter: usually just the nominative

For the great majority of feminine and neuter nouns, the vocative is identical to the nominative — no ending change at all. You just say the word (usually without the article).

• Feminine: Μαρία → Μαρία!, η μαμά → μαμά!, η κυρία → κυρία!
• Neuter: το παιδί → παιδί μου!, το αγόρι → αγόρι μου!

This is why so many learners forget the vocative exists — for women and for neuter nouns, nothing changes, so the change on masculine names feels like an exception rather than the rule.

Polite address: κύριε, κυρία, δεσποινίς

The everyday polite forms are worth memorising as a set:

• κύριε — "sir / Mr" (vocative of ο κύριος).
• κυρία — "madam / Mrs / Ms" (unchanged; = nominative).
• δεσποινίς — "Miss" (formal, somewhat dated; modern speakers increasingly use κυρία for adult women).

When a title combines with a surname, both parts go into the vocative — and a masculine surname in -ος takes -ε, like a common noun:

Notice Παπαδόπουλος → Παπαδόπουλε (surnames follow the common-noun rule, not the first-name rule), while the female surname Παπαδοπούλου doesn't change. In casual speech you'll also hear the address particle ρε (ρε Γιάννη! — "hey Yiannis!"). It is informal, but it is not friendly or rude by grammar alone: an established relationship, the setting, the speaker's stance and the delivery determine whether it conveys solidarity, teasing, impatience or confrontation. With an unfamiliar person or in a formal interaction it is a marked, high-risk choice, so learners should follow the interaction's existing style rather than treat “peer” or “stranger” as a mechanical rule. More on the whole social side of address is on addressing people.

Dropping the article

Unlike the nominative, genitive and accusative, the vocative never takes the definite article. You talk about a person with the article — ο Γιάννης έφυγε ("Yiannis left") — but you talk to them without it: Γιάννη, πού πας; ("Yiannis, where are you going?"). Sticking the article on is a classic learner slip.

Common Mistakes

1. Using the dictionary form to address a common -ος noun. You must switch -ος to -ε.

2. Assuming every first name in -ος takes the same vocative ending. Common short names often take -ο, while many longer names take ordinary -ε.

3. Leaving the article on when addressing someone. The vocative drops it.

4. Not changing a -ης name at all. Even names that "look done" must drop the -ς.

Key Takeaways

• The vocative is the form for calling or addressing someone; English has no equivalent, so the ending change is easy to forget.
• Masculine common nouns in -ος normally take -ε (φίλε, κύριε, γιατρέ). Many common short first names take -ο (Γιώργο, Νίκο), while longer names often retain -ε (Αλέξανδρε, Στέφανε); -ης → -η (Γιάννη), -ας → -α (Θωμά).
• Feminine and neuter nouns almost always keep the nominative form (Μαρία!, παιδί μου!).
• Polite address: κύριε / κυρία / δεσποινίς; with a surname both parts inflect (κύριε Παπαδόπουλε).
• The vocative never takes the definite article — Γιάννη!, never ×ο Γιάννη!