From Proto-Finnic *soomi. Cognates include Finnish suomi and Estonian soome.
soomi
| Declension of soomi (type 5/lehti, no gradation) | ||
|---|---|---|
| singular | plural | |
| nominative | soomi | soomet |
| genitive | soomen | soomiin, soomiloin |
| partitive | soomia | soomija, soomiloja |
| illative | soomee | soomii, soomiloihe |
| inessive | soomees | soomiis, soomilois |
| elative | soomest | soomist, soomiloist |
| allative | soomelle | soomille, soomiloille |
| adessive | soomeel | soomiil, soomiloil |
| ablative | soomelt | soomilt, soomiloilt |
| translative | soomeks | soomiks, soomiloiks |
| essive | soomenna, soomeen | soominna, soomiloinna, soomiin, soomiloin |
| exessive1) | sooment | soomint, soomiloint |
| 1) obsolete *) the accusative corresponds with either the genitive (sg) or nominative (pl) **) the comitative is formed by adding the suffix -ka? or -kä? to the genitive. | ||
From Proto-Finnic *soomi.
soomi
| Declension of soomi (type VII/nimi, no gradation) | ||
|---|---|---|
| singular | plural | |
| nominative | soomi | — |
| genitive | soomõ | — |
| partitive | soomia | — |
| illative | soomõsõ, soomõ | — |
| inessive | soomõz | — |
| elative | soomõssõ | — |
| allative | soomõlõ | — |
| adessive | soomõllõ | — |
| ablative | soomõltõ | — |
| translative | soomõssi | — |
| *) the accusative corresponds with either the genitive (sg) or nominative (pl) **) the terminative is formed by adding the suffix -ssaa to the short illative (sg) or the genitive. ***) the comitative is formed by adding the suffix -ka to the genitive. | ||