Nachgewiesene

Nachgewiesene is the attributive form of the German adjective derived from the verb nachweisen, meaning proven or demonstrated. It is used to describe facts, results, or evidence that have been substantiated by data, research, or verification. In plain terms, something described as nachgewiesen or nachgewiesene has been shown or confirmed to be true.

Grammatically, nachgewiesene is an inflected form that depends on gender, number, and case, as well as on the presence of a determiner. For example, feminine singular with a definite article: die nachgewiesene Tatsache (the proven fact). With an indefinite article or no article, forms may appear as eine nachgewiesene Tatsache (feminine singular) or nachgewiesene Tatsachen (plural, no article). In generalized usage, the masculine form for a single proven item is nachgewiesener Beleg, and the plural with a definite article is die nachgewiesenen Tatsachen.

Usage notes show that nachgewiesene is common in scientific, technical, and formal writing to express that claims have been validated. In many contexts, the related participle nachgewiesen functions as a predicate or adverbial form (das ist nachgewiesen) and can be used more succinctly to indicate proven status. Synonyms include bewiesen, belegbar, and beleglich, though each carries its own nuance.

See also: Nachweis (proof or demonstration), Beweis (evidence), Belegt (supported by evidence).