nieustalonej

Nieustalonej is the feminine singular form used in Polish to describe something that has not been determined or fixed yet. It derives from the adjective nieustalone, which combines the negation prefix nie- with ustalone (established, determined) from the verb ustalić (to determine). The overall sense is “undetermined” or “not yet established.”

In practice, nieustalonej appears in formal, administrative, and legal contexts to modify feminine nouns in cases where the attribute is not fixed. Common examples include nieustalonej przyczyny (undetermined cause), nieustalonej decyzji (undetermined decision), nieustalonej daty (undetermined date), nieustalonej wartości (undetermined value), and nieustalonej kwoty (undetermined amount). The form is used with feminine nouns and changes according to the case and number of the noun it accompanies.

Grammatically, nieustalonej is the feminine singular form associated with the genitive, dative, or locative cases depending on the sentence. The same adjective can appear in other forms to agree with masculine or neuter nouns (e.g., nieustalony, nieustalone), but nieustalonej specifically signals agreement with a feminine noun in a case requiring that ending. The term is closely related to, yet distinct from, synonyms such as nieokreślony (unspecified) and nieustalony (not yet established), each carrying subtle nuance regarding whether something is merely unclear or actively undetermined.

In usage, nieustalonej emphasizes the absence of a final determination rather than a settled state, a nuance often found in official documents and procedural language.