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Every guidebook prints both words. Yassou. Yassas. Almost none of them mention that picking the wrong one is not a grammatical error but a social one.
Say yassou to a seventy-year-old shopkeeper and you have addressed him in the familiar singular — the form you'd use with a child, or a close friend of thirty years. He will not correct you. He will simply register that you don't know. Say yassas to someone your own age over a beer and you sound like a form letter.
And then there is the harder question, the one no guidebook answers honestly: at what hour does kalimera become kalispera? Every site online gives a confident number. They give different numbers. We asked our five Greeks, who live in five different parts of the country, and they gave five different answers — which is itself the real answer.
Yassou vs Yassas: The Mistake That's Actually Rude
Greek, like French and German, splits the second person into a familiar singular and a polite plural. English lost this distinction centuries ago, which is why English speakers walk straight into it.
Γεια σου (yassou) — singular and familiar. One person, whom you know, or who is roughly your age, or who is a child.
Γεια σας (yassas) — plural or polite. A group. A stranger. Anyone older than you. Anyone in a professional or service role — the shopkeeper, the waiter, the hotel receptionist, the taxi driver, the ticket clerk.
The rule that actually works: if you are not certain, use yassas. Over-formality in Greece registers as respect and costs you nothing. Under-formality registers as presumption. There is no situation in which a visitor is penalised for yassas, and several in which yassou lands badly.
The one thing that softens it: Greeks will often invite you into the informal — a wave of the hand, a "μπορείς να μου μιλάς στον ενικό" (you can speak to me casually). When that invitation comes, take it. Until it does, yassas.
And the same split runs through everything else. It isn't only the greeting:
When Does Kalimera Become Kalispera? We Asked Five Greeks
Search this question and you will be told, with total confidence: noon. Or 1pm. Or 2pm. Or "around 5 or 6pm." Or "sunrise to
noon." Every source is certain, and they contradict each other, and almost all of them close with the same shrug — it varies by region.
None of them can show you the variation. We can. Our five contributors live and work in five different parts of Greece. We asked each of them a single question: what time do you personally switch?
So the honest answer is a range, not an hour. 12:00 to 15:00, drifting later in summer, earlier in winter. What this means for a visitor is simpler than it looks: there is a grey zone in the early afternoon in which no Greek will think twice about either word. Say kalimera at 2pm and nobody blinks. Say kalispera at 12:30 and nobody blinks.
The mistake that is noticed is the one at the far end: kalimera at nine in the evening. Walk into a restaurant at dinner and wish the waiter good morning, and he will smile — the specific smile reserved for a tourist who has learned one Greek word and deployed it bravely.
The Full Greeting System: All Seven, and When
The two traps, restated because they're the ones people actually fall into:
- Kalinihta is a goodbye, not a hello. Walk into a taverna at 10pm and say it, and you have told the waiter goodnight on arrival.
- Kalimera at dinner. The single most common visitor error, and the one Greeks find most endearing — which is another way of saying they notice it every time.
What Greeks Do With Their Hands and Face
(Keep the current section almost verbatim — it's the strongest original material on the page and no competitor has it. Only tighten.)
Meeting a stranger: a handshake, from both men and women, with direct eye contact. The eye contact is not optional; it reads as respect.
Meeting someone you know: one kiss on each cheek — women to women, and women to men. Men shake hands, or hug with a back-pat if they're close. Younger Greeks are markedly more physical than older ones.
In a shop or a café: no contact at all. The verbal greeting and a nod. But do greet. Walking into a Greek establishment in silence is read as mildly rude — a small thing, but a real one. Yassas or kalimera on the way in; efharisto and yassas on the way out. That's the whole transaction.
On the phone: embros.
Arriving in Greece: Your First Kalimera
For most visitors the first real greeting of the trip happens in an arrivals hall — to a driver holding a sign, at a hotel desk, in the first taxi. It's a low-stakes place to try it, because the person you're greeting deals with visitors all day and will meet a wobbly kalimera with genuine warmth.
Hello, Goodbye, and Cheers Are the Same Word
Here is the thing that makes the Greek greeting system cohere, and it's worth knowing even though you don't need it to use the words correctly.
Γεια (ya) means health.
Γεια σου — health to you. Γεια σας — health to you all. It is not "hello" the way English means hello; it is a wish. And it's the same word you'll raise a glass with: γεια μας — yamas — health to us, the toast covered in full in cheers in Greek.
Which is why the same word does hello and goodbye. You aren't marking an arrival or a departure. You are wishing someone well, and that wish works in both directions.
Kalimera, kalispera and kalinihta follow the same logic — kali (good) + mera (day), spera (evening), nihta (night). Every Greek greeting is a small wish, spoken out loud. That's the whole system, and once you see it, the words stop needing to be memorised.
Plan Your Greece Trip
- Thank You in Greek — efharisto and the essential gratitude phrases
- Greek Phrases Guide — the full practical language guide for visitors
- How to Eat at a Greek Taverna — culture and ordering guide
- Athens Travel Guide — where to use your new greetings first
- How to Plan a Trip to Greece — the full planning framework
🇬🇷 Planning a trip to Greece? Use our AI Trip Planner to build your itinerary — Γεια σας!
Written by
Athens-born engineer · Coordinates a 5-expert Greek team · 50+ years combined field experience
I write every article on this site drawing on real, first-hand expertise — mine and that of four colleagues who live and work across Greece daily: a Peloponnese tour operator, a transfer specialist across Athens, Mykonos & Santorini, a Cretan hotel owner, and a Northern Greece hotel supplier. Nothing here comes from a single visit or desk research.
Informed by 5 Greek experts
Every destination we cover has been visited and vetted by at least one team member — not for a review, but as part of their daily work in Greek tourism.