unsubstantiated
9 synonyms and 1 antonym for unsubstantiated, grouped by meaning and by how common each one is.
Adj — Not backed up by evidence or proof.
Synonyms
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
How to use unsubstantiated
The word patterns that sound natural to a native speaker.
unsubstantiated claim
unsubstantiated rumour
unsubstantiated allegation
Etymology
Formed from unsubstantiate and -ed.
Full origin of unsubstantiated →Frequently asked questions
What does “unsubstantiated” mean?
The word “unsubstantiated” means not backed up by evidence or proof. In plain terms, a claim that hasn't been proven true.
How do you use “unsubstantiated” in a sentence?
Here is “unsubstantiated” used in a sentence: “The tabloid ran an unsubstantiated rumour about the celebrity.”
What part of speech is “unsubstantiated”?
“Unsubstantiated” is an adjective.
