нераскрытый

adjective

Very rarely used word (top 30,000)

1.
unopened
Example:
На столе лежало нераскрытое письмо.
An unopened letter lay on the table.
2.
unsolved, uninvestigated, undisclosed
Example:
Это было нераскрытое дело полиции.
It was an unsolved police case.
3.
undiscovered, unrevealed, unrealized
Example:
У него был нераскрытый потенциал.
He had undiscovered potential.