Unbeatability is a synonym of undefeatability.
As nouns the difference between unbeatability and undefeatability
is that unbeatability is the quality of being unbeatable, undefeatability while undefeatability is the quality of being undefeatable; undefeatableness.
unbeatability
English
Noun
(-)
The quality of being unbeatable, undefeatability.
Synonyms
*unbeatableness
*undefeatability
*undefeatableness (rare)
*invincibility
*invulnerability
*impregnability
undefeatability
English
Noun
(-)
The quality of being undefeatable; undefeatableness.
Synonyms
*unbeatability
*unbeatableness
*undefeatableness (rare)
*invincibility
*invulnerability
*impregnability