неизвестна

unknown

nʲ ɪ ɪ z vʲ e s n ə → неизвестный
не not + известн known; famous + а feminine singular short adjective
adjective · feminine singular Rare #34,917
unknown short form, feminine (used as a predicate)
RU: Причина смерти неизвестна.
EN: The cause of death is unknown.
Forms of неизвестный
MasculineFeminine
Singular неизвестна