Finnish
Etymology
A variant of Kosti (a diminutive of Konstantin).[1]
Pronunciation
- IPA(key): /ˈkoi̯sti/, [ˈko̞i̯s̠ti]
- Rhymes: -oisti
- Syllabification(key): Kois‧ti
- Hyphenation(key): Kois‧ti
Proper noun
Koisti
- a Finnish surname
Declension
| Inflection of Koisti (Kotus type 5/risti, no gradation)
|
| nominative
|
Koisti
|
Koistit
|
| genitive
|
Koistin
|
Koistien
|
| partitive
|
Koistia
|
Koisteja
|
| illative
|
Koistiin
|
Koisteihin
|
|
|
singular
|
plural
|
| nominative
|
Koisti
|
Koistit
|
| accusative
|
nom.
|
Koisti
|
Koistit
|
| gen.
|
Koistin
|
| genitive
|
Koistin
|
Koistien
|
| partitive
|
Koistia
|
Koisteja
|
| inessive
|
Koistissa
|
Koisteissa
|
| elative
|
Koistista
|
Koisteista
|
| illative
|
Koistiin
|
Koisteihin
|
| adessive
|
Koistilla
|
Koisteilla
|
| ablative
|
Koistilta
|
Koisteilta
|
| allative
|
Koistille
|
Koisteille
|
| essive
|
Koistina
|
Koisteina
|
| translative
|
Koistiksi
|
Koisteiksi
|
| abessive
|
Koistitta
|
Koisteitta
|
| instructive
|
—
|
Koistein
|
| comitative
|
See the possessive forms below.
|
| first-person singular possessor
|
|
|
singular
|
plural
|
| nominative
|
Koistini
|
Koistini
|
| accusative
|
nom.
|
Koistini
|
Koistini
|
| gen.
|
Koistini
|
| genitive
|
Koistini
|
Koistieni
|
| partitive
|
Koistiani
|
Koistejani
|
| inessive
|
Koistissani
|
Koisteissani
|
| elative
|
Koististani
|
Koisteistani
|
| illative
|
Koistiini
|
Koisteihini
|
| adessive
|
Koistillani
|
Koisteillani
|
| ablative
|
Koistiltani
|
Koisteiltani
|
| allative
|
Koistilleni
|
Koisteilleni
|
| essive
|
Koistinani
|
Koisteinani
|
| translative
|
Koistikseni
|
Koisteikseni
|
| abessive
|
Koistittani
|
Koisteittani
|
| instructive
|
—
|
—
|
| comitative
|
— |
Koisteineni
|
| second-person singular possessor
|
|
|
singular
|
plural
|
| nominative
|
Koistisi
|
Koistisi
|
| accusative
|
nom.
|
Koistisi
|
Koistisi
|
| gen.
|
Koistisi
|
| genitive
|
Koistisi
|
Koistiesi
|
| partitive
|
Koistiasi
|
Koistejasi
|
| inessive
|
Koistissasi
|
Koisteissasi
|
| elative
|
Koististasi
|
Koisteistasi
|
| illative
|
Koistiisi
|
Koisteihisi
|
| adessive
|
Koistillasi
|
Koisteillasi
|
| ablative
|
Koistiltasi
|
Koisteiltasi
|
| allative
|
Koistillesi
|
Koisteillesi
|
| essive
|
Koistinasi
|
Koisteinasi
|
| translative
|
Koistiksesi
|
Koisteiksesi
|
| abessive
|
Koistittasi
|
Koisteittasi
|
| instructive
|
—
|
—
|
| comitative
|
— |
Koisteinesi
|
| first-person plural possessor
|
|
|
singular
|
plural
|
| nominative
|
Koistimme
|
Koistimme
|
| accusative
|
nom.
|
Koistimme
|
Koistimme
|
| gen.
|
Koistimme
|
| genitive
|
Koistimme
|
Koistiemme
|
| partitive
|
Koistiamme
|
Koistejamme
|
| inessive
|
Koistissamme
|
Koisteissamme
|
| elative
|
Koististamme
|
Koisteistamme
|
| illative
|
Koistiimme
|
Koisteihimme
|
| adessive
|
Koistillamme
|
Koisteillamme
|
| ablative
|
Koistiltamme
|
Koisteiltamme
|
| allative
|
Koistillemme
|
Koisteillemme
|
| essive
|
Koistinamme
|
Koisteinamme
|
| translative
|
Koistiksemme
|
Koisteiksemme
|
| abessive
|
Koistittamme
|
Koisteittamme
|
| instructive
|
—
|
—
|
| comitative
|
— |
Koisteinemme
|
| second-person plural possessor
|
|
|
singular
|
plural
|
| nominative
|
Koistinne
|
Koistinne
|
| accusative
|
nom.
|
Koistinne
|
Koistinne
|
| gen.
|
Koistinne
|
| genitive
|
Koistinne
|
Koistienne
|
| partitive
|
Koistianne
|
Koistejanne
|
| inessive
|
Koistissanne
|
Koisteissanne
|
| elative
|
Koististanne
|
Koisteistanne
|
| illative
|
Koistiinne
|
Koisteihinne
|
| adessive
|
Koistillanne
|
Koisteillanne
|
| ablative
|
Koistiltanne
|
Koisteiltanne
|
| allative
|
Koistillenne
|
Koisteillenne
|
| essive
|
Koistinanne
|
Koisteinanne
|
| translative
|
Koistiksenne
|
Koisteiksenne
|
| abessive
|
Koistittanne
|
Koisteittanne
|
| instructive
|
—
|
—
|
| comitative
|
— |
Koisteinenne
|
| third-person possessor
|
|
|
singular
|
plural
|
| nominative
|
Koistinsa
|
Koistinsa
|
| accusative
|
nom.
|
Koistinsa
|
Koistinsa
|
| gen.
|
Koistinsa
|
| genitive
|
Koistinsa
|
Koistiensa
|
| partitive
|
Koistiaan
Koistiansa
|
Koistejaan
Koistejansa
|
| inessive
|
Koistissaan
Koistissansa
|
Koisteissaan
Koisteissansa
|
| elative
|
Koististaan
Koististansa
|
Koisteistaan
Koisteistansa
|
| illative
|
Koistiinsa
|
Koisteihinsa
|
| adessive
|
Koistillaan
Koistillansa
|
Koisteillaan
Koisteillansa
|
| ablative
|
Koistiltaan
Koistiltansa
|
Koisteiltaan
Koisteiltansa
|
| allative
|
Koistilleen
Koistillensa
|
Koisteilleen
Koisteillensa
|
| essive
|
Koistinaan
Koistinansa
|
Koisteinaan
Koisteinansa
|
| translative
|
Koistikseen
Koistiksensa
|
Koisteikseen
Koisteiksensa
|
| abessive
|
Koistittaan
Koistittansa
|
Koisteittaan
Koisteittansa
|
| instructive
|
—
|
—
|
| comitative
|
— |
Koisteineen
Koisteinensa
|
|
Derived terms
Statistics
- The surname Koisti belongs to 80 individuals, according to August 2025 data from the Digital and Population Data Services Agency of Finland.
References
- ^ Mikkonen, Pirjo; Paikkala, Sirkka (2000), Sukunimet, Helsinki: Otava, →ISBN