English Reference

Word

unsubstantiated

Phoneticsun·sub·stan·ti·at·ed

US/ˌənsəbˈstænʃiˌeɪtɪd/

UK/ʌnsəbstˈænʃɪˌeɪtɪd/

Definition

adj. describing a claim or story that has no proof or evidence to support it. You use this when someone says something, but you cannot show that it is true.

adj. lacking evidence or proof to support a claim. Often used to describe allegations or rumors that remain unverified by facts or data.

Examples

“The police ignored the unsubstantiated rumors about the suspect.”

“The board of directors dismissed the unsubstantiated claims of financial fraud after a full audit found no evidence of wrongdoing.”

“While the whistleblower's initial allegations were unsubstantiated, the subsequent investigation revealed a systemic failure in the company's internal compliance protocols.”

Examples

simple

“The police ignored the unsubstantiated rumors about the suspect.”

contextual

“The board of directors dismissed the unsubstantiated claims of financial fraud after a full audit found no evidence of wrongdoing.”

complex

“While the whistleblower's initial allegations were unsubstantiated, the subsequent investigation revealed a systemic failure in the company's internal compliance protocols.”

Real-World Examples

“In his resignation letter, Kravchenko said he did not want his position to be used as a "tool for political confrontation", and referenced an earlier post in which he rejected the claims as "unsubstantiated".”
BBC News · 8 Sept 2026
“Though he has criticised the voting method as ripe for fraud — an unsubstantiated allegation — Trump himself has voted by mail on multiple occasions, including in this month’s Florida primary.”
Al Jazeera · 22 Aug 2026

This entry

Level
C1 · Advanced
Frequency
Occasional
Updated

Scan code

englishreference.com/q/unsubstantiated

English Reference