unascertainable

UK
/ˌʌn.əs.əˈteɪ.nə.bəl/
US
/ˌʌn.əˈsɜr.təˌneɪ.bəl/
unascertainableadjective
UK
/ˌʌn.əs.əˈteɪ.nə.bəl/
US
/ˌʌn.əˈsɜr.təˌneɪ.bəl/
Translations
The cause of the error was unascertainable.
Причина ошибки была неопределимой.
Definitions
Not able to be determined or discovered with certainty.
The cause of the mysterious illness was unascertainable despite numerous tests.