A Finnish adjective can stand in two places, and the place decides how it inflects. Attributively — right before its noun — it agrees fully, copying the noun's case and number: vanha talo ("an old house"), vanhassa talossa ("in an old house"). Predicatively — after the verb olla ("to be") — it does not copy the noun's case; it snaps back to the nominative: Talo on vanha ("The house is old"). Getting this split right is the difference between sounding fluent and building sentences that collapse the moment a case ending appears.
Attributive: the adjective copies everything
An attributive adjective sits inside the same noun phrase as its head, so it takes the same case and the same number. Whatever ending lands on the noun lands on the adjective too. The pair moves as a unit.
Vanha talo on kylän laidalla.
The old house is on the edge of the village. (nominative)
Asumme vanhassa talossa aivan meren rannalla.
We live in an old house right by the sea. (inessive on both)
Ostin lahjan suuresta kaupasta keskustassa.
I bought a gift from a big shop downtown. (elative on both: suuresta kaupasta)
Lapset leikkivät kauniissa puutarhassa koko iltapäivän.
The children played in the beautiful garden all afternoon. (inessive: kauniissa puutarhassa)
Notice that the adjective's own stem changes cooperate with the ending — suuri → suuressa/suuresta, kaunis → kauniissa — exactly as they would if the adjective stood alone. Full agreement means the adjective declines like a noun in its own right. This is spelled out in detail on the adjective agreement page.
Predicative: the linking verb resets the case
Now move the adjective to the other side of olla. It is no longer inside the noun phrase — it is a separate predicate describing the subject. A predicative adjective takes the nominative, no matter what the subject would look like in an oblique case:
Tämä talo on vanha ja vähän ränsistynyt.
This house is old and a bit run-down.
Auto oli uusi mutta yllättävän halpa.
The car was new but surprisingly cheap.
Sää on tänään kaunis, mennään ulos.
The weather is beautiful today, let's go out.
The subject talo is in the nominative here, so nothing looks strange yet. The trap springs the moment the idea of a case tempts you. In Asun vanhassa talossa, the house wears the inessive; but the instant you rephrase it as Talo on vanha, the linking verb olla strips the case away. The predicative is not "in" the house-location any more — it is simply describing the house.
Kaupunki, jossa asun, on iso ja meluisa.
The city I live in is big and noisy.
The distinguishing rule: case vs number
Here is the clean summary that separates the two positions:
| Position | Agrees in case? | Agrees in number? | Example |
|---|---|---|---|
| Attributive (before noun) | Yes — copies the noun | Yes | vanhassa talossa |
| Predicative (after olla) | No — stays nominative/partitive | Yes | talo on vanha |
Only the attributive adjective agrees in case. The predicative agrees in number — singular versus plural — but never copies an oblique case. A singular subject takes a singular predicative; a plural subject pushes the predicative into the partitive plural:
Talo on iso.
The house is big. (singular subject → nominative predicative)
Talot ovat isoja.
The houses are big. (plural subject → partitive plural predicative)
Nämä autot ovat aika vanhoja.
These cars are quite old.
That plural form isoja / vanhoja is not a case-copy — the subject talot / autot is nominative plural, yet the predicative goes partitive. The predicative also turns partitive when the subject is a mass or substance (Kahvi on kuumaa). Both of those partitive situations have their own page: partitive predicatives. For now, hold on to the core contrast: attributive copies the case, predicative does not.
Why English speakers get this wrong
English adjectives never inflect at all — old is old whether it sits before the noun ("an old house") or after "to be" ("the house is old"). So when English speakers start marking Finnish cases, they over-apply the habit: seeing the subject somewhere in a case, they inflect the predicative to "match." The result is Talo on vanhassa, which reads as though the house is located inside something old. The fix is a single principle: the linking verb olla resets the predicative to the nominative (or partitive for mass/plural subjects), and it never carries an oblique case across the copula.
The mirror-image error also happens: learners strip the attributive adjective of its ending because English does not inflect it — writing Asun vanha talossa instead of vanhassa talossa. Inside the noun phrase, the adjective must wear the same suffix as the noun.
Common Mistakes
❌ Talo on vanhassa.
Incorrect — olla resets the predicative to the nominative; the inessive does not cross the copula.
✅ Talo on vanha.
The house is old.
❌ Asun vanha talossa.
Incorrect — an attributive adjective must copy the noun's case: vanhassa talossa.
✅ Asun vanhassa talossa.
I live in an old house.
❌ Autot ovat iso.
Incorrect — the predicative agrees in number; a plural subject takes the partitive plural: isoja.
✅ Autot ovat isoja.
The cars are big.
❌ Ostin lahjan suuresta kaupasta, joka on kalliissa.
Incorrect — after on the predicative is nominative: kallis, not the inessive kalliissa.
✅ Ostin lahjan kaupasta, joka on kallis.
I bought a gift from a shop that is expensive.
Key Takeaways
- Attributive adjectives (before the noun) copy the noun's case and number: vanhassa talossa, suuresta kaupasta.
- Predicative adjectives (after olla) take the nominative, never an oblique case: Talo on vanha.
- The predicative agrees in number, not case: singular iso, plural → partitive isoja.
- The classic transfer error is inflecting the predicative to "match" the subject (talo on vanhassa) — olla always resets it.
- Mass and plural subjects push the predicative into the partitive; that split is covered on partitive predicatives.
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Start learning Finnish→Related Topics
- Adjective Agreement in Case and NumberA2 — The attributive adjective copies its head noun's case AND number — isossa talossa, pienten lasten, kauniita kukkia — with every stacked adjective agreeing too.
- Partitive Predicatives: Kahvi on kuumaaB1 — After olla, a mass or plural subject takes a partitive predicative adjective (kahvi on kuumaa, lapset ovat pieniä); a bounded singular stays nominative.
- Partitive Predicative: Kahvi on hyvääB1 — With olla, a mass, abstract or plural subject takes a partitive predicate (kahvi on hyvää); a bounded countable singular stays nominative (talo on iso).
- Finnish AdjectivesA1 — How Finnish adjectives work: they decline like nouns, agree with their head noun in case and number, and form comparatives with -mpi and -in — no gender.