Meaning & Definition
adjective
Not based on fact or reality; without foundation; groundless.
The claims made by the whistleblower were unfounded and lacked any credible evidence.
Having no basis in fact or truth.
Her fears about losing her job were completely unfounded.
Unjustified or baseless.
The newspaper issued a retraction after realizing their report was unfounded.
Not substantiated or supported.
The accusations against the politician turned out to be unfounded.
Etymology
From 'un-' meaning 'not' + 'founded', past participle of 'found' meaning to establish or to base.
Common Phrases and Expressions
unfounded fears:
Fears that have no basis in reality.
unfounded claims:
Claims that are not supported by evidence.
unfounded allegations:
Allegations that lack verifiable proof.
Slang Meanings
Totally made up.
That story is just unfounded gossip.
Without proof.
His accusations were just unfounded hot air.