The Finnish Genitive Case: Rules, Endings, And Examples
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The Finnish genitive case is an essential grammar rule you need to learn early on.
It’s primarily used to show possession or ownership.
In English, this is the equivalent of adding an apostrophe and an “s” to a word, or using the word “of”.
Understanding how to form and use the genitive will instantly expand your ability to build basic sentences.
I’ll show you exactly how to apply the correct endings and rules.
Table of Contents:
What is the genitive case in Finnish?
The genitive case simply tells us who owns something.
It links two nouns together to show that the first noun possesses the second one.
You’ll attach a specific ending to the first noun to show this relationship.
For example, if you want to say “the dog’s toy”, the word “dog” will be in the genitive case.
Finnish genitive endings and rules
Forming the genitive case in Finnish is very straightforward.
You simply add the letter -n to the inflectional stem of a word.
If the word ends in a vowel, the stem is usually just the basic form of the word.
| Nominative (Basic form) | Genitive form | English translation |
|---|---|---|
| Koira | Koiran | Dog’s |
| Talo | Talon | House’s |
| Kissa | Kissan | Cat’s |
Koiran talo on iso.
Annan kissa nukkuu.
Consonant gradation in the genitive
Adding the -n ending to a word closes the final syllable.
In Finnish, closing a syllable triggers a rule called consonant gradation.
This means that certain consonants (K, P, and T) will change from a “strong” grade to a “weak” grade.
You must apply these changes before you add the -n ending.
| Consonant change | Nominative | Genitive | English translation |
|---|---|---|---|
| kk ➔ k | Kukka | Kukan | Flower’s |
| pp ➔ p | Kuppi | Kupin | Cup’s |
| tt ➔ t | Tyttö | Tytön | Girl’s |
| k ➔ (drops out) | Jalka | Jalan | Leg’s |
| p ➔ v | Leipä | Leivän | Bread’s |
| t ➔ d | Katu | Kadun | Street’s |
Tytön kirja on uusi.
Pojan koira haukkuu.
Personal pronouns in the genitive
You’ll frequently use the genitive case with personal pronouns to say “my”, “your”, or “their”.
These pronouns are slightly irregular, so you just need to memorize them.
| English pronoun | Finnish nominative | Finnish genitive | English meaning |
|---|---|---|---|
| I | Minä | Minun | My / Mine |
| You | Sinä | Sinun | Your / Yours (singular) |
| He / She | Hän | Hänen | His / Her / Hers |
| We | Me | Meidän | Our / Ours |
| You (plural) | Te | Teidän | Your / Yours (plural) |
| They | He | Heidän | Their / Theirs |
Tämä on minun autoni.
Missä on sinun puhelimesi?
Spoken Finnish variations of the genitive
Written Finnish and spoken Finnish can sound very different.
In everyday spoken language, natives heavily shorten the genitive pronouns.
If you travel around Finland, you’ll rarely hear people say minun or sinun.
Instead, you’ll hear regional spoken variations.
| Written genitive | Spoken genitive | English meaning |
|---|---|---|
| Minun | Mun | My / Mine |
| Sinun | Sun | Your / Yours |
| Hänen | Sen | His / Her |
| Meidän | Meijän | Our / Ours |
| Teidän | Teijän | Your / Yours (plural) |
| Heidän | Niitten / Niiden | Their / Theirs |
Tää on mun auto.
Onks toi sun koira?
Using the genitive with necessity verbs
The genitive case isn’t strictly limited to showing ownership.
You must also use it when expressing necessity with verbs like täytyy (must / have to).
In these sentences, the subject performing the action is put into the genitive form.
Minun täytyy mennä.
Sinun täytyy opiskella.
Learning the genitive case opens up a massive portion of the Finnish language.
Make sure to practice the -n ending and review the consonant gradation rules.
