No. 13,636 in Russian
неизвестны
"Unknown" or "not known."
In a sentence
Причины этой проблемы всё ещё неизвестны.
The causes of this problem are still unknown.
In this sentence, 'неизвестны' is used as a predicate, describing the state of being unknown for the subject 'causes of this problem', demonstrating an adjectival usage in plural form in Russian.
Неизвестны ли вам правила этого соревнования?
Are the rules of this competition unknown to you?
Here, 'неизвестны' is used in an interrogative construction, addressing the listener's knowledge about the rules of this competition, functioning as an adjective in predicative form.
Может быть, причины всего этого остаются неизвестны.
Perhaps the reasons for all this remain unknown.
In this clause, 'неизвестны' is used in a descriptive manner to express the ongoing status of the reasons, highlighting its role as an adjective with the meaning 'unknown.'
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