Pääteparit
Pääteparit, literally ending pairs, is a term used in Finnish linguistics to describe pairs of inflectional suffixes that express the same grammatical meaning but appear as two phonologically conditioned variants (allomorphs). They are a common feature in Finnish noun and adjective inflection and illustrate how vowel harmony and other phonological factors shape suffix choices.
Typical examples include sets such as the inessive endings -ssa/-ssä (meaning “in”), the elative endings -sta/-stä
In linguistic analysis, identifying pääteparit helps explain how a single grammatical function can be realized by
Limitations: not all endings have allomorph pairs, and some show more complex alternations due to stem changes,