unsubstantiated

adjective
UK: /ˌʌnsəbˈstænʃieɪtɪd/
US: /ˌʌnsəbˈstænʃieɪtɪd/

  1. Not proven or supported by evidence; lacking factual support.

    1. His claims were unsubstantiated, so I don't believe him.
    2. The report dismissed the rumors as unsubstantiated allegations without merit.

Synonyms

unproven unconfirmed unverified groundless

Frequently Asked Questions

The phonetic transcription of "unsubstantiated" is /ˌʌnsəbˈstænʃieɪtɪd/ in British English and /ˌʌnsəbˈstænʃieɪtɪd/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "unsubstantiated": unproven, unconfirmed, unverified, groundless.

Example usage of "unsubstantiated": "His claims were unsubstantiated, so I don't believe him.". More examples on the page.