This is the 7563rd most frequent Russian word.
достоверность
Accuracy or reliability.
In this sentence, 'достоверность' signifies the level of trustworthiness or truthfulness of an information source.
Достоверность источника информации была под сомнением.
The reliability of the information source was in question.
In this context, 'достоверность' represents the necessity of maintaining the accuracy and validity of data for reliability.
Для научных исследований важно обеспечивать достоверность данных.
For scientific research, it is important to ensure the accuracy of data.
Here, 'достоверность' refers to the reliability or credibility of someone's statements.