-seen

Etymology
From earlier *-sehen, a combination of the illative suffixes  and.

Usage notes

 * See the appendix on Finnish nominal cases for more information on how the illative case is used.
 * Used after a second- or third-syllable long vowel. For words like, this suffix is common, based on a stem like , but it is grammatically wrong – is preferred in formal usage, using on a stem like.