Nominatiiviepäsäännöllisiksi

Nominatiiviepäsäännöllisiksi is a Finnish grammatical term referring to nouns that exhibit irregular plural forms in the nominative case. While most Finnish nouns follow predictable patterns for forming their plural nominative, a select group deviates from these rules. These deviations can manifest in various ways, such as changes to the stem of the noun or the addition of unique suffixes.

For example, some common nouns might undergo internal vowel changes in their plural form that are not typical. Others might use plural endings that are not the standard -t or -t. The term "epäsäännöllisiksi" itself highlights this irregular nature. Understanding these exceptions is crucial for accurate Finnish grammar, particularly in spoken language and formal writing.

The number of these irregular nouns is relatively small compared to the vast majority of regular nouns. However, they are often frequently used words, making them important to learn for anyone studying Finnish. Linguistic research suggests that many of these irregularities stem from older stages of the Finnish language or have been influenced by contact with other languages. While specific reasons for each irregularity can vary, the overall phenomenon of nominatiiviepäsäännöllisiksi is a notable aspect of Finnish noun morphology.