Definition of unsubstantiated
- an unsubstantiated rumor/report
- a plausible but unsubstantiated theory
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unsubstantiated.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Thesaurus: All synonyms and antonyms for unsubstantiated Spanish Central: Translation of unsubstantiated Nglish: Translation of unsubstantiated for Spanish speakers
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