yleiskielisiin

Yleiskielisiin is the illative plural form of the Finnish adjective yleiskielinen, meaning “to standard-language forms” or “into standard Finnish terms.” In Finnish grammar, adjectives agree with the nouns they modify, and when the noun is in illative plural, the adjective takes the ending -isiin. The term functions as a grammatical inflection rather than as a standalone lexical item, and it appears whenever a noun described as standard language is in the illative plural.

In usage, yleiskielisiin is commonly encountered in linguistic descriptions, language-policy discussions, and analyses of formal writing. It signals that the referenced words, forms, or concepts belong to standard or formal Finnish, as opposed to dialectal, colloquial, or pidgin varieties. The exact meaning depends on the accompanying noun, for example yleiskielisiin sanoihin (into standard-language words) or yleiskielisiin termeihin (into standard-language terms).

Grammatically, yleiskielisiin contrasts with other inflected forms of yleiskielinen, such as yleiskielinen (singular nominative) and yleiskielisiä (plural nominative or partitive, depending on context). It also sits within broader Finnish distinctions between yleiskieli (standard language) and other language registers like puhekieli (colloquial speech) or kirjakieli (written standard language). Although not a commonly used standalone term, yleiskielisiin appears in academic and descriptive texts when detailing standard-language usage in specific contexts.