Nieustalony

Nieustalony is a Polish adjective meaning not determined or undetermined. It is used to describe information, facts, or identities that have not yet been established or clarified, or situations where a conclusion is pending. The term can apply to various domains, including law, journalism, and science.

In legal and investigative contexts, nieustalony is common in phrases such as nieustalony sprawca (unknown perpetrator), nieustalone miejsce zdarzenia (location not established), and nieustalone okoliczności (unresolved circumstances). In reporting, the expression nieustalone fakty indicates that certain facts have not been verified or confirmed. In science or research, nieustalone przyczyny means unknown causes, and nieustalone dane or nieustalone wyniki refer to data or results that have not yet been determined.

Etymology: nieustalony is formed from ustalony (established, determined) with the prefix nie-, yielding a meaning opposite to established. The word agrees with gender and number of the noun it modifies: nieustalony (masc. sing.), nieustalona (fem. sing.), nieustalone (neut./pl.).

Notes: Unlike permanent falsehood or ignorance, nieustalony conveys provisional status—uncertainty pending further information. Related terms include ustalony (determined), nieznany (unknown), and niepewny (uncertain).