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Pronunciation varies by accent · noun
(nonstandard) The quality of being unbeatable, unbeatability..
Use unbeatableness when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Unbeatableness means (nonstandard) The quality of being unbeatable, unbeatability..
Common synonyms include unbeatability, undefeatability, undefeatableness, invincibility.
The opposite depends on the specific sense.
Use unbeatableness where its definition matches the intended context.
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