Levelling Of I-Umlaut in Classical and Post-Classical Old Frisian Nouns

The paper discusses and evaluates the extent of i-umlaut levelling in classical (ca. 1300–1400) post-classical (ca.1400–1550) Old Frisian nouns. In terms methodology, main goal analysis is to identify quantitative relation between incidence i-umlauted umlautless root vowels nominal declension paradigms. order understand assess process Frisian, three aspects that may have had an impact on presence or absence i-mutated are taken into account, namely: i-mutation trigger *-ī *-j *-i, establishment whether noticeable entire paradigm it just intraparadigmatic alternation, finally, differentiation borrowing from another language. A performed texts culled two corpora Frisian: Corpus Oudfries Integrated Scientific Language Database. reveals tendency language regularize its patterns, which results a later vowels. This period language’s development. Statistical tests evaluate proportion differences operation indicate discrepancies with reference nouns forms significant. can supplement study influence patterns not only but all West Germanic languages.