Finnish can take a relative clause like talo, jonka isä rakensi "the house that father built" and squeeze it into a single pre-modifier: isän rakentama talo. The tool is the agent participle (agenttipartisiippi), a -ma/-mä form preceded by its agent in the genitive. This page is about the clause it replaces — how a joka-relative built on an object becomes an agent participle, when the swap is legal, and what it does to register. For the participle's morphology, the pronoun-agent forms and full paradigm, see the agent participle page.
What it replaces: an object relative clause
Take any relative clause of the shape "the X that Y made/did", where X is the object of the verb and Y is the doer:
| joka-relative clause | Agent participle clause | English |
|---|---|---|
| ruoka, jonka äiti teki | äidin tekemä ruoka | the food (that) mother made |
| talo, jonka isä rakensi | isän rakentama talo | the house (that) father built |
| taulu, jonka Picasso maalasi | Picasson maalaama taulu | the painting Picasso painted |
| tehtävä, jonka opettaja antoi | opettajan antama tehtävä | the task the teacher gave |
Watch what happens across the arrow. The relative pronoun jonka and the finite verb rakensi both disappear. The doer isä, which was the subject of the relative clause, is demoted to a bare genitive isän. The verb becomes the -ma/-mä participle, and the head noun talo — the old object — now sits at the end. Three pieces, always in order: genitive agent + participle + head noun.
Äidin tekemä ruoka maistuu aina parhaalta.
The food mother makes always tastes best.
Picasson maalaama taulu myytiin miljoonilla.
The painting Picasso painted sold for millions.
Hallituksen tekemä päätös herätti kovaa vastustusta.
The decision the government made stirred fierce opposition.
Why it exists: the passive can't name a doer
Finnish already has a way to say "a built house": the past passive participle rakennettu talo. But that form is a dead end if you want to say who built it — Finnish has no productive "by" phrase to bolt onto a passive participle. You cannot say *isän rakennettu talo. The agent participle is exactly the construction that fills the gap: a passive-flavoured modifier with the agent named, packed into one genitive.
Tämä on serkkuni suunnittelema talo.
This is the house my cousin designed.
Naapurin kasvattamat tomaatit ovat paljon makeampia kuin kaupan.
The tomatoes the neighbour grew are much sweeter than the shop's.
It agrees with its head noun
The agent participle is grammatically an adjective, so it agrees in case and number with the head noun it modifies — exactly as punainen agrees in punaisessa talossa. The genitive agent, by contrast, never moves: it is fixed by its own role and does not copy the head noun's case.
Söin koko illan äidin tekemää ruokaa.
I ate the food mother made all evening. (partitive: tekemää ruokaa)
Asumme nyt isän rakentamassa talossa.
We now live in the house father built. (inessive: rakentamassa talossa)
En ehtinyt tehdä kaikkia opettajan antamia tehtäviä.
I didn't manage to do all the tasks the teacher gave. (partitive plural: antamia tehtäviä)
Notice the agent stays äidin, isän, opettajan while only the participle+head pair inflects: tekemää ruokaa (partitive), rakentamassa talossa (inessive), antamia tehtäviä (partitive plural). This double behaviour — frozen agent, agreeing participle — is the mechanical heart of the construction.
Pronoun agents add a possessive suffix
When the doer is a personal pronoun, the participle takes a matching possessive suffix on top of the genitive pronoun: the car I bought is minun ostamani auto, the letter you wrote is sinun kirjoittamasi kirje.
Minun ottamani kuva pääsi lehden kanteen.
The photo I took made it onto the magazine cover.
Luin eilen sinun kirjoittamasi kirjeen kahteen kertaan.
Yesterday I read the letter you wrote twice over.
When it is not available
Two conditions must both hold, or the swap fails and you keep the finite relative clause:
- The verb must be transitive. The head noun is the participle's object, so an intransitive verb with no object — nukkua "sleep", juosta "run" — cannot form the construction. There is no *lapsen nukkuma ….
- Only the object can become the head. The construction promotes the verb's object to head noun. It cannot promote a subject. "The man who built the house" keeps the man as doer, so it stays a relative clause: mies, joka rakensi talon — never *talon rakentama mies.
Mies, joka rakensi talon, on jo eläkkeellä.
The man who built the house is already retired. (the man is the doer → relative clause, not an agent participle)
Register: compact and written
The agent participle is idiomatic Finnish, but it is also markedly written and slightly formal (formal / literary). Newspapers, academic prose and careful writing lean on it heavily — hallituksen tekemä päätös, tutkijoiden julkaisema raportti — because it packs a whole clause into a tight noun phrase. In casual speech many Finns unfold it back into a joka-relative: päätös, jonka hallitus teki. Both are correct; the choice is one of register and density, discussed on the participle or että-clause page. For English speakers the trap runs the other way — the construction feels so alien that learners avoid it entirely and sound flat in writing.
Tutkijoiden julkaisema raportti sai laajaa huomiota mediassa.
The report the researchers published drew wide media attention.
Common Mistakes
❌ Picasso maalaama taulu.
Incorrect — the agent must be genitive: Picasson maalaama taulu.
✅ Picasson maalaama taulu.
The painting Picasso painted.
❌ Isän rakennettu talo on iso.
Incorrect — the passive -ttu can't take a named agent; use the agent participle rakentama.
✅ Isän rakentama talo on iso.
The house father built is big.
❌ Söin äidin tekemä ruokaa.
Incorrect — the participle must agree in the partitive: tekemää ruokaa.
✅ Söin äidin tekemää ruokaa.
I ate the food mother made.
❌ Minä ostama auto oli kallis.
Incorrect — a pronoun agent takes the genitive plus a possessive suffix: minun ostamani auto.
✅ Minun ostamani auto oli kallis.
The car I bought was expensive.
❌ Talon rakentama mies on eläkkeellä.
Incorrect — the man is the doer, not the object; a subject can't be relativized this way. Use mies, joka rakensi talon.
✅ Mies, joka rakensi talon, on eläkkeellä.
The man who built the house is retired.
Key Takeaways
- The agent participle clause replaces an object relative clause: talo, jonka isä rakensi → isän rakentama talo.
- Structure is fixed: genitive agent + -ma/-mä participle + head noun. The genitive names the doer, not a possessor.
- The participle agrees with the head noun (tekemää ruokaa, rakentamassa talossa); the genitive agent never changes.
- Pronoun agents add a possessive suffix: minun ostamani auto.
- It only works when the verb is transitive and the head noun is its object — a subject relative stays a joka-clause.
- Register is written/formal; speech often unfolds it back into a finite relative clause.
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Start learning Finnish→Related Topics
- The Agent Participle: isän rakentama taloC1 — The -ma/-mä participle with a genitive agent compresses 'the X that Y made' — äidin tekemä ruoka, isän rakentama talo — naming a doer the plain passive cannot.
- Relative Clauses with joka and mikäB2 — Finnish relative clauses use joka for a specific noun and mikä for a clause, a pronoun or a superlative. joka takes its case from its role inside the clause.
- Participle Construction or että-Clause?C1 — When to compress an että/kun/joka-clause into a participle (referatiivi, temporaali, agent) and when to keep the finite clause — a register-driven decision.
- The Referative Construction: Sanoin tulevaniB2 — Compress an että-clause into a participle after verbs of saying and thinking: Sanoin tulevani ('I said I'd come'), Luulen hänen tulevan ('I think he's coming').