Järjestetyissä

Järjestetyissä is the inessive plural form of the Finnish past participle järjestetty, derived from the verb järjestää, meaning to organize or to arrange. Järjestetty functions as an adjective meaning "organized" or "arranged." As a participial adjective, järjestetty describes nouns and agrees with them in number and case. Järjestetyissä is the plural inessive form, used to say “in the organized [ones/things].” In Finnish, the inessive plural suffix is -issa/-issä, chosen according to vowel harmony; with the stem järjestetty the form becomes järjestetyissä.

In practice, järjestetyissä appears in phrases describing plural nouns that are located or assumed to be organized. Common examples include järjestetyissä tiloissa ("in the organized spaces"), järjestetyissä kansioissa ("in the organized folders"), and järjestetyissä tapahtumissa ("in the organized events"). The form is typically preceded by a noun in the corresponding case (tiloissa, kansioissa, tapahtumissa) and can function attributively or predicatively in a sentence. The meaning conveyed is that the referenced items have been arranged or structured.

Note that järjestetyissä is a grammatical inflection rather than a separate concept. It expresses organization as a quality of multiple nouns and is frequent in formal or administrative language, particularly in contexts such as documentation, arrangements, or data organization. Related forms include other plural inessive inflections of ei- or past participles, and broader discussions of Finnish participles and case endings.

See also: Finnish grammar, past participles, inessive case, suffixes -ssa/-issä.