Undebatably is a antonym of debatably.
As adverbs the difference between debatably and undebatably
is that debatably is in a way subject to challenge or worthy of debate while undebatably is in a way that is not debatable; in an undebatable way.
undebatably
English
Adverb
(
en adverb)
In a way that is not debatable; in an undebatable way.
Synonyms
* unarguably
* undisputably
Antonyms
* debatably