Every trigger that puts a singular noun into the partitive — negation, quantity words, an ongoing object — has a plural counterpart, and that counterpart is the plural partitive: taloja, käsiä, maita. Its meaning is "some Xs, an indefinite amount of Xs," and it is the form you reach for whenever you talk about countable things in a vague or open quantity. It also happens to be one of the endings learners most often get wrong, because it comes in three shapes and rebuilds the stem before it attaches. This page sorts out both the meaning and the endings.
What the plural partitive means: "some houses"
Contrast the two plurals of talo:
| Form | Meaning |
|---|---|
| talot (nominative plural) | the houses — a definite, whole set |
| taloja (partitive plural) | houses / some houses — an indefinite amount |
Kylässä on vanhoja taloja ja yksi kirkko.
There are old houses and one church in the village. (some houses)
Kadun talot ovat kaikki 1920-luvulta.
The houses on the street are all from the 1920s. (the specific set)
The first sentence introduces houses as an open, unspecified quantity — taloja. The second points at a definite, bounded set — talot. This is the plural echo of the singular ostin auton ("the car," bounded) vs ostin autoa ("was buying a car," unbounded): the partitive is the case of the indefinite and the incomplete.
The three main triggers, now in the plural
The plural partitive shows up in exactly the places the singular partitive does — just with countable things there is more than one.
Existential "there are (some) Xs":
Pihalla leikkii lapsia ja koiria.
There are children and dogs playing in the yard.
Negated plural object:
En ostanut torilta omenoita, ne olivat liian kalliita.
I didn't buy any apples at the market, they were too expensive.
Ongoing or indefinite plural object, and after quantity words:
Luen iltaisin lapsille satuja.
In the evenings I read fairy tales to the children.
Meillä on paljon kirjoja ja vanhoja lehtiä.
We have a lot of books and old magazines.
For the quantity-word trigger specifically (paljon taloja, vähän ihmisiä) see the quantifiers page; the singular-vs-plural decision has its own dedicated page.
The three endings — read them off the plural stem
The plural partitive ending is a short -a/-ä or a heavier -ta/-tä, and which surface shape you get depends on how the plural stem ends. The plural marker -i- is inserted first, and that is what the ending attaches to.
| Ending | Attaches to | Examples |
|---|---|---|
| -ja / -jä | plural stem ending in a diphthong -Vi (the i turns to j between vowels) | talo → taloja, kissa → kissoja, kirja → kirjoja |
| -ia / -iä | plural stem ending in a single -i after a consonant | käsi → käsiä, koira → koiria, päivä → päiviä |
| -ita / -itä | long vowels, diphthongs, and contracted -e / -s stems | maa → maita, työ → töitä, huone → huoneita, vieras → vieraita |
The first two are really the same -A ending: taloi- + a becomes taloja because an -i- squeezed between two vowels turns into j, while koiri- + a stays koiria because its -i- sits after a consonant. The third, -ita/-itä, is the "heavy" form for stems ending in a long vowel (maa), a diphthong (työ), or a contracted -e/-s stem (huone, vieras).
Ostin torilta perunoita, porkkanoita ja tuoreita mansikoita.
I bought potatoes, carrots and fresh strawberries at the market.
Suomessa on kymmeniä tuhansia järviä ja saaria.
Finland has tens of thousands of lakes and islands.
Juhlissa oli paljon vieraita ja liian vähän tuoleja.
There were a lot of guests and too few chairs at the party.
The plural -i- reshapes the stem
The reason this ending feels slippery is that the plural -i- often changes the stem vowel before the ending even appears. The base vowel you know from the dictionary shifts:
| Word | Plural stem | Partitive plural |
|---|---|---|
| talo | taloi- | taloja |
| kirja | kirjoi- (a → o) | kirjoja |
| koira | koiri- (a dropped) | koiria |
| maa | mai- | maita |
| työ | töi- | töitä |
So kirja does not give *kirjaja — the a becomes o before the plural -i-, giving kirjoja; and koira drops its final a altogether, giving koiria. Whether the -a turns to o or disappears depends on the word's first-syllable vowel, a piece of stem morphology handled in full on the plural i-stem and plural partitive & genitive pages. For now, the takeaway is that you build the plural stem first, then attach the ending.
Harmony still applies
As always, the ending's vowel follows vowel harmony: back-vowel words take -ja / -ia / -ita, front-vowel words take -jä / -iä / -itä.
Näin puistossa koiria, mutta kissoja ei näkynyt.
I saw dogs in the park, but no cats were around. (koiria back, kissoja back)
Teen töitä kotona kolmena päivänä viikossa.
I work from home three days a week. (töitä, päivänä — front)
Common Mistakes
❌ Pihalla on autot.
Incorrect for 'there are (some) cars' — an indefinite plural quantity is the partitive plural: autoja. (Autot = the specific cars.)
✅ Pihalla on autoja.
There are cars in the yard.
❌ En ostanut omenat.
Incorrect — a negated plural object is partitive plural: omenoita, never the nominative plural omenat.
✅ En ostanut omenoita.
I didn't buy any apples.
❌ Kaupassa oli paljon ihmiset.
Incorrect — a countable noun after paljon is partitive plural: ihmisiä.
✅ Kaupassa oli paljon ihmisiä.
There were a lot of people in the shop.
❌ Luen joka ilta kirjat.
Incorrect for a habitual, indefinite object — 'I read books every evening' is kirjoja; kirjat would mean the specific books read to completion.
✅ Luen joka ilta kirjoja.
I read books every evening.
❌ Suomessa on paljon järvit ja metsät.
Incorrect — indefinite plural quantity is partitive plural: järviä ja metsiä.
✅ Suomessa on paljon järviä ja metsiä.
Finland has a lot of lakes and forests.
Key Takeaways
- The plural partitive means "some Xs, an indefinite amount" — the plural counterpart of the singular partitive, opposed to the definite nominative plural -t (taloja vs talot).
- It appears in the same triggers as the singular partitive: existentials, negated objects, ongoing objects, and quantity words — just with countable things.
- Three endings, chosen by the plural stem's ending: -ja/-jä (taloja), -ia/-iä (koiria, käsiä), -ita/-itä (maita, huoneita, vieraita).
- Build the plural -i- stem first — it reshapes the vowel (kirja → kirjoi- → kirjoja, koira → koiri- → koiria) — then attach the ending.
- Harmony holds throughout: taloja (back) vs käsiä (front).
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Start learning Finnish→Related Topics
- Partitive Endings: -a/-ä, -ta/-tä, -tta/-ttäA2 — The partitive has three shapes chosen by the stem: -a/-ä on single-vowel stems, -ta/-tä on consonants and long vowels, -tta/-ttä on -e nouns.
- Partitive Singular vs PluralB2 — Mass nouns take the partitive singular (vettä), countable plurals the partitive plural (taloja); a number resets everything to singular (kolme taloa).
- Plural Formation in the Partitive and GenitiveB1 — The two trickiest plural cases: partitive plural (-ja/-jä, -ia/-iä, -ita/-itä) and genitive plural (-jen, -ien, -iden, old -ten), allomorphs sorted out.
- The Oblique Plural Stem -i-A2 — Every plural case except the nominative is built on stem + -i-: talo→taloi- gives taloissa, taloista, taloille. The single biggest fact about Finnish number.
- Partitive After Quantity Words: paljon, vähän, pariA2 — Quantity and measure words govern the partitive: paljon rahaa, vähän vettä, kilo omenoita — mass nouns stay singular, countable ones go plural.