Uncorroborated antonyms

What is the opposite word for Uncorroborated?

warranted

without substantiation
called-for

without substantiation
reasonable

without substantiation
justified

without substantiation
proven

without substantiation
certain

questionable
sure

questionable
based
confirmed

unauthorized
official

unauthorized
authorized

unauthorized
authoritative

unauthorized
verified
authorised

Antonyms for uncorroborated

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Opposite words of uncorroborated

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Antonyms for Uncorroborated. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/antonyms/uncorroborated

Antonyms for Uncorroborated. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/antonyms/uncorroborated>.

Antonyms for Uncorroborated. 2016. Accessed July 22, 2026. https://thesaurus.plus/antonyms/uncorroborated.