- (on a positive adjective) Suffix to mark that the corresponding noun is either in plural or in definite singular form.
- Marker of definiteness for noun plurals ending in -n (fourth declension).
- A verb-building suffix that can be added to noun or adjectives.
- Create a noun from a numeral.
Inherited from Old Swedish -a inherited from Old Norse -a inherited from Proto-Germanic *-ōną.