unfounded
adjectiveUK /ʌnˈfaʊndɪd/
US /ʌnˈfaʊndɪd/
Not based on facts or proof.
The rumor about the school closing was completely unfounded.
RELATED WORDS
OTHER MEANINGS
2. Having no foundation or basis in reality.
His fears about the trip turned out to be unfounded.
3. Not yet established or set up.
The unfounded company had no office or staff yet.
4. Lacking a firm reason or evidence for a claim.
The accusation was unfounded and quickly dropped.