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 usually drops the article (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 → -ο

Here is the split that trips everyone up. Common nouns in -ος take -ε, but masculine first names in -ος 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. The rule of thumb: names → -ο, common nouns → -ε. (Surnames in -ος behave like common nouns and take -ε; see the polite-address section below.)

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 truly casual speech you'll also hear the address particle ρε (ρε Γιάννη! — "hey Yiannis!") (informal; friendly among peers but rude to a stranger or a superior). Save it for friends. 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. Putting the -ε ending on a first name. Names in -ος take -ο, not -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 -ος → -ε (φίλε, κύριε, γιατρέ), but masculine first names -ος → -ο (Γιώργο, Νίκο); -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 drops the article — Γιάννη!, never ×ο Γιάννη!