Abstract noun; normally uncountable.
Translations
непобедимостьО команде, спортсмене, сопернике; обычно в контексте соревнований, спорта или борьбы. The unbeatability of the champions was evident throughout the season.
Непобедимость чемпионов была очевидна на протяжении всего сезона.
Definitions
the quality or state of being impossible to beat or defeat The unbeatability of the champions was evident throughout the season.