This is the 15258th most frequent German word.
unbestimmten
"Unbestimmten" translates to "indefinite" or "undefined" in English.
Here, 'unbestimmten' is used to describe the nature of the object indicated by the article as indefinite (not specific).
Ein Artikel zeigt einen unbestimmten Gegenstand an.
An article indicates an indefinite object.
In this sentence, 'unbestimmten' is used to characterize the future plans as vague or undefined.
Wir diskutieren über unbestimmten Zukunftspläne.
We are discussing indefinite future plans.
This usage of 'unbestimmten' describes the origin of the word meaning as not clearly defined or identifiable.