unsubstantiated
adjective
un·sub·stan·ti·at·ed
ˌən-səb-ˈstan(t)-shē-ˌā-təd 
: not proven to be true : not substantiated
an unsubstantiated rumor/report
a plausible but unsubstantiated theory
Examples of unsubstantiated in a Sentence
an unsubstantiated claim that was thrown out of court
Recent Examples on the Web
Kennedy, 72, the son of onetime attorney general Robert Kennedy, is the nation's top public health official and has drawn bipartisan criticism for his handling of various issues such as vaccines and unsubstantiated links between Tylenol and autism.
—
Anna Kaufman, USA Today, 11 Feb. 2026
There has been local media chatter about the potential mood in the VIP section, amid unsubstantiated reports that French President Emmanuel Macron has yet to confirm his attendance and does not want to sit next to Vance in light of recent tensions over Greenland.
—Melanie Goodfellow, Deadline, 5 Feb. 2026
In a court filing last week, Drummond’s office said the lawmakers leveled unsubstantiated attacks at Hiett and other officials but failed to challenge the validity of the fuel-adjustment clause orders themselves.
—Paul Monies, Oklahoma Watch, 3 Feb. 2026
As The Sunday Times reported, there is no indication that the former advisor was aware of the emails or the unsubstantiated allegations.
—Charna Flam, PEOPLE, 31 Jan. 2026
See All Example Sentences for unsubstantiated
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Anna Kaufman, USA Today, 11 Feb. 2026
There has been local media chatter about the potential mood in the VIP section, amid unsubstantiated reports that French President Emmanuel Macron has yet to confirm his attendance and does not want to sit next to Vance in light of recent tensions over Greenland.
—Melanie Goodfellow, Deadline, 5 Feb. 2026
In a court filing last week, Drummond’s office said the lawmakers leveled unsubstantiated attacks at Hiett and other officials but failed to challenge the validity of the fuel-adjustment clause orders themselves.
—Paul Monies, Oklahoma Watch, 3 Feb. 2026
As The Sunday Times reported, there is no indication that the former advisor was aware of the emails or the unsubstantiated allegations.
—Charna Flam, PEOPLE, 31 Jan. 2026
See All Example Sentences for unsubstantiated
Cite this Entry
“Unsubstantiated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unsubstantiated. Accessed 15 Feb. 2026.
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