Antonyms of adj refutable

1 sense of refutable

Sense 1
questionable, refutable, confutable, confutative -- (able to be refuted)

INDIRECT (VIA deniable) -> undeniable -- (not possible to deny)

Similarity of adj refutable

1 sense of refutable

Sense 1
questionable, refutable, confutable, confutative -- (able to be refuted)
       => deniable (vs. undeniable) -- (capable of being denied or contradicted)