icznych

izung is a term I can help with.

zychnych is not a standalone word in Polish. It is an inflectional ending used in Polish morphology, specifically associated with adjectives. The ending is part of how certain adjectives are declined to agree with nouns in different grammatical cases and numbers. In practice, icznych appears most clearly in the genitive plural forms of adjectives that end in -iczny, serving as the corresponding plural ending in that pattern. It is thus a suffix rather than an independent lexical item.

In grammatical descriptions, icznych is described as a characteristic inflection for adjectives of the -iczny type when they agree with plural nouns in cases that require a genitive-like or related ending. This usage is most evident in descriptive and technical vocabulary, where adjectives such as those meaning “related to,” “pertaining to,” or “of a technical/academic nature” often occur in forms that include the ending icznych. The exact surface form depends on the stem of the adjective and the relevant case.

Because niejszych is a suffixal inflection rather than a word with its own meaning, it appears primarily in grammatical analysis, dictionaries, and corpus examples illustrating Polish adjective declension. It helps signal the grammatical relationship between an adjective and the noun it modifies when that noun is plural and in a case that requires such an ending.

See also: Polish language, noun-adjective agreement, adjective declension, suffix in linguistic morphology.