IPA: /ʌnˈbiːtəblɪ/
KK: /ʌnˈbiːtəblɪ/
In a way that cannot be defeated or surpassed.
She performed unbeatably in the competition, leaving everyone in awe.
Unbeatably → It is formed from "un-" (meaning not) and "beatable" (from "beat" which comes from Old English "beatan", meaning to strike or defeat, plus the suffix "-able" meaning capable of). The word "unbeatably" means in a manner that cannot be defeated or struck down.
Think of 'not' ('un-') being able to be 'defeated' ('beatable') — that's why unbeatably means something that cannot be defeated.