στο is probably the first Greek word you ever met that is really two words. It is the preposition σε ("to, at, in, on") welded onto the definite article το, and the weld is not optional: in Modern Greek you cannot write the two apart. This page owns the whole contraction system — the accusative grid, the genitive forms στου / στης / στων that most courses never mention, and the sharp line between fusion (σε only) and mere elision (από, για, με).
Two neighbouring pages touch this from other angles and do not repeat what is here. Accusative after prepositions is about which case prepositions govern, and how cases show on the article is about the article grid itself. If you want the semantics of σε — when it means "to" and when "at" — that is σε: to, at, in, on.
The accusative grid
σε governs the accusative, so it is the accusative article it swallows. Six cells, and you will use every one of them daily.
| Masculine | Feminine | Neuter | |
|---|---|---|---|
| Singular | σε + τον = στον | σε + την = στη(ν) | σε + το = στο |
| Plural | σε + τους = στους | σε + τις = στις | σε + τα = στα |
The mechanics are trivial once you see them: drop the ε of σε, keep the τ- of the article, glue. σ + τον → στον. What is not trivial for an English speaker is that "to the / at the / in the / on the" — four different English phrases — all collapse into one Greek word, and that word is gendered. Before you can say "at the", you must already know the noun's gender and number.
Τα παιδιά είναι στο πάρκο με τη γιαγιά τους.
ta pedhiá íne sto párko me ti yayá tus
The kids are at the park with their grandmother.
Δουλεύω στον πρώτο όροφο, δίπλα στο ασανσέρ.
dhulévo ston próto órofo, dhípla sto asansér
I work on the first floor, next to the lift.
Έστειλα μήνυμα στους συναδέλφους μου και περιμένω απάντηση.
éstila mínima stus sinadhélfus mu ke periméno apándisi
I texted my colleagues and I'm waiting for a reply.
Θα σας δω στις οχτώ στην πλατεία.
tha sas dho stis ochtó stin platía
I'll see you at eight in the square.
That last sentence is worth a second look: στις οχτώ is a time ("at eight") and στην πλατεία is a place, and they use the same preposition. Greek does not split its spatial and temporal "at".
στη or στην? The final-ν rule travels with the fusion
The fused feminine form inherits the article's behaviour exactly. Write στην before a vowel and before the stops κ, π, τ, ξ, ψ and the clusters μπ, ντ, γκ, τσ, τζ; write στη before any other consonant.
| στην (ν kept) | στη (ν dropped) |
|---|---|
| στην Αθήνα, στην Κύπρο, στην πόλη, στην τσάντα | στη δουλειά, στη θάλασσα, στη Μαρία, στη Ρόδο |
The masculine στον behaves differently in neutral current writing: it keeps its ν in every sound environment, which also keeps it visibly distinct from neuter στο. In relaxed speech that final sound may be weak or absent, and older or informal writing sometimes mirrors the reduced pronunciation as στο before some consonants. Learners should write στον for masculine nouns. The full writing-versus-speech distinction is on the final-ν rule.
Μένουμε στη Λάρισα εδώ και τρία χρόνια.
ménume sti Lárisa edhó ke tría chrónia
We've been living in Larissa for three years.
Πήγαμε στην Κύπρο τον Αύγουστο και κάναμε μπάνιο κάθε μέρα.
píghame stin Kípro ton Ávghusto ke káname bánio káthe méra
We went to Cyprus in August and swam every day.
Έδωσα τα κλειδιά στον διαχειριστή της πολυκατοικίας.
édhosa ta klidhiá ston dhiachiristí tis polikatikías
I gave the keys to the building manager.
The genitive contractions: στου, στης, στων
Here is the part that most textbooks omit and that then confuses learners the moment they hear it. σε also fuses with the genitive article, giving στου, στης, στων. These forms are entirely real and thoroughly everyday.
| σε + | Fused | Typical use |
|---|---|---|
| του | στου | στου Γιάννη — at Giannis's (place) |
| της | στης | στης Μαρίας — at Maria's (place) |
| των | στων | στων γονιών μου — at my parents' (place) |
Why a genitive after σε at all? Because a noun has been left out. Πάω στου Γιάννη is understood like Πάω στο σπίτι του Γιάννη with το σπίτι left unspoken — "I'm going to [the house] of Giannis". English offers a useful parallel with at Giannis's, at the baker's, and at my parents', although the two languages build the forms differently.
Απόψε τρώμε στου Γιάννη, μας κάλεσε για μακαρόνια.
apópse tróme stu Yáni, mas kálese ya makarónia
We're eating at Giannis's tonight — he's invited us for pasta.
Το βράδυ θα είμαι στης αδερφής μου, πάρε με εκεί.
to vrádhi tha íme stis adherfís mu, páre me ekí
I'll be at my sister's this evening — call me there.
Τα Χριστούγεννα τα περνάμε πάντα στων γονιών μου.
ta Christúyena ta pernáme pánda ston ghonión mu
We always spend Christmas at my parents'.
Two extensions are worth knowing. The pattern is ordinary with shops and trades: στου φούρναρη (at the baker's), στου μανάβη (at the greengrocer's). It is also part of the conventional form of some Athens neighbourhood names, notably στου Ζωγράφου and στου Γκύζη.
Μένει στου Ζωγράφου, πέντε λεπτά από τη σχολή.
méni stu Zoghráfu, pénde leptá apó ti scholí
She lives in Zografou, five minutes from the faculty.
In this location construction, plural στων is less frequent than singular στου and στης, but it is a normal choice when the understood place belongs to more than one person.
What σε does not fuse with
The fusion is a fact about σε plus the definite article, and nothing else. Three near-misses:
The indefinite article. σε does not fuse with ένας/μία/ένα. Before the vowel-initial accusatives it merely elides, losing its own ε and taking an apostrophe: σ' έναν φίλο, σ' ένα μαγαζί. Neutral current writing retains the masculine final ν in έναν. The full σε έναν / σε ένα is also correct; before feminine μία/μια there is no vowel hiatus, so write σε μία/σε μια.
Βρεθήκαμε σ' ένα καφενείο στην παλιά πόλη.
vrethíkame s' éna kafenío stin paliá póli
We met up at a little café in the old town.
Strong pronouns. σε stays a separate word: σε μένα, σ' εμένα, σε σένα, σε αυτόν, σ' αυτούς, σε μας, σ' εμάς — all of these exist and all are correct. The forms with initial ε- (εμένα, εμάς) are slightly fuller and slightly more emphatic; the shorter ones are the everyday default. There is nothing to fuse here.
Σ' εμένα δεν είπε τίποτα, σ' εσένα;
s' eména dhen ípe típota, s' eséna;
He didn't say anything to me — did he to you?
Bare nouns. No article, no fusion: πάω σε γιατρό, μένω σε ξενοδοχείο.
The other prepositions only elide
από, για and με are often described as "contracting", which overstates it. What actually happens is elision: the preposition drops its own final vowel before another vowel and an apostrophe marks the gap. The article stays a separate word.
| Preposition | Full form | Elided form | Status |
|---|---|---|---|
| από | από το σπίτι | απ' το σπίτι | optional; very common in speech |
| για | για αυτό | γι' αυτό | near-obligatory before αυτ- |
| με | με αυτόν | μ' αυτόν | optional; very common |
| σε | σε αυτό | σ' αυτό | optional; very common |
The contrast with σε + article is absolute: απ' το can always be written back out as από το and nothing is lost, while ×σε το simply does not exist as Modern Greek. One is a stylistic clipping, the other is a fixed form of the language.
Κατέβηκα απ' το λεωφορείο μία στάση νωρίτερα.
katévika ap' to leoforío mía stási norítera
I got off the bus one stop early.
Γι' αυτό δεν σου τηλεφώνησα χθες, δεν είχα μπαταρία.
y' aftó dhen su tilefónisa chthes, dhen ícha bataría
That's why I didn't call you yesterday — my battery was dead.
Common Mistakes
1. Writing σε and the definite article as two words. The fusion is compulsory, not a colloquial shortcut.
❌ Θα πάμε σε την Αθήνα το Πάσχα.
Incorrect — σε + την must fuse: στην Αθήνα.
✅ Θα πάμε στην Αθήνα το Πάσχα.
tha páme stin Athína to Páscha
We're going to Athens at Easter.
2. Getting στη / στην wrong. The ν survives before a vowel and before κ, π, τ, ξ, ψ, μπ, ντ, γκ, τσ, τζ.
❌ Ο αδερφός μου σπουδάζει στη Πάτρα.
Incorrect — before π the ν stays: στην Πάτρα.
✅ Ο αδερφός μου σπουδάζει στην Πάτρα.
o adherfós mu spudházi stin Pátra
My brother studies in Patras.
3. Leaving the genitive article unfused. στου, στης and στων obey the same rule as στον and στο.
❌ Θα φάμε σε του Γιάννη το Σάββατο.
Incorrect — σε + του fuses: στου Γιάννη.
✅ Θα φάμε στου Γιάννη το Σάββατο.
tha fáme stu Yáni to Sávato
We're eating at Giannis's on Saturday.
4. Picking the wrong gender in the fused form. The fusion hides the article, but the gender is still in there.
❌ Πάμε στον παραλία να πιούμε κάτι.
Incorrect — παραλία is feminine: στην παραλία.
✅ Πάμε στην παραλία να πιούμε κάτι.
páme stin paralía na piúme káti
Let's go down to the beach for a drink.
5. Misplacing the apostrophe in elided forms. It marks the missing vowel, so it sits at the end of the shortened word.
❌ Μόλις γύρισα απο' το χωριό.
Incorrect — από loses its final vowel, so the apostrophe closes the word: απ' το χωριό.
✅ Μόλις γύρισα απ' το χωριό, είμαι πτώμα.
mólis yírisa ap' to chorió, íme ptóma
I've just got back from the village — I'm wrecked.
Key Takeaways
- σε is the only preposition that truly fuses with the article, and the fusion is obligatory: στον, στη(ν), στο, στους, στις, στα.
- The fused word is gendered, so "to/at/in/on the" forces you to know the noun's gender before you can say it.
- The feminine follows the final-ν rule (στην before a vowel or κ π τ ξ ψ μπ ντ γκ τσ τζ, στη otherwise); neutral current writing keeps masculine στον throughout, although relaxed speech and older or informal spelling may show reduction.
- σε also fuses with the genitive: στου Γιάννη, στης Μαρίας, στων γονιών μου — "at someone's place", with the noun σπίτι understood. στου and στης are everyday; στων is rarer.
- σε does not fuse with the indefinite article (σ' ένα), with strong pronouns (σε μένα, σ' εμάς — both fine), or with a bare noun.
- από, για, με only elide (απ' το, γι' αυτό, μ' αυτόν) — optional clippings whose full forms remain perfectly correct.
Related Topics
- σε: to, at, in, onA1 — How σε covers both location and direction, fuses with the definite article, and marks recipients and clock time.
- Definite Article: Full DeclensionA1 — The complete singular-and-plural grid of the Greek definite article, drilled one form at a time — the three overlaps that trip everyone up (του for two genders, οι for two, το doubling as neuter subject and object), and the split τον/τη(ν) final-ν rule.
- Elision and SynizesisB1 — Why σε αυτό becomes σ' αυτό, από εδώ becomes απ' εδώ, and θα έρθω becomes θα 'ρθω — and why μια is one syllable ('mya'), not two. The vowel-smoothing that makes spoken Greek flow; full forms sound stiff.