This is the 10133rd most frequent Russian word.
безнаказанным
"Безнаказанным" means "unpunished."
In this sentence, the word 'безнаказанными' is used as an adjective describing 'поступки,' indicating the expectation of consequences or punishment for actions.
Его поступки не останутся безнаказанными.
His actions will not go unpunished.
Here, 'безнаказанным' is used as a predicate adjective in conjunction with 'можно быть,' describing a state of being unpunished.
Люди не должны верить, что можно быть безнаказанным.
People should not believe that one can go unpunished.
In this example, 'безнаказанным' describes the ongoing state of the subject (the politician), emphasizing the lack of consequences over time.