Unfounded: meaning, definitions and examples

Unfounded is frequently used when talking about beliefs or opinions that have no foundation in reality.

• Her belief that he was cheating was unfounded
• The police found the allegations to be completely unfounded

Baseless is typically used when someone makes a statement, claim, or allegation that has no support or justification.

• The accusations against her were entirely baseless
• His arguments are baseless and lack factual support

Groundless is used to describe complaints, fears, or suspicions that are not based on any facts or valid reason.

• Their groundless complaints were quickly dismissed
• His fears about losing his job were groundless

Unsubstantiated is often used in formal or legal contexts to describe claims or allegations that have not been proven or supported by evidence.

• The report contained unsubstantiated claims about his involvement
• Her accusations remain unsubstantiated as no proof has been found

Used when a belief, statement, or claim lacks any basis in fact or truth.

• His fears were unfounded; there's no evidence to support them

Used when there is no good reason or explanation for an action or opinion.

• The police resorted to unjustified force during the protest

Used when something is done without valid reason or need, often implying it is inappropriate or excessive.

• The comment about her appearance was totally unwarranted and rude

Used when something is not guided by or based on good sense or logic; often perceived as excessive or inappropriate.

• Demanding a refund after using most of the product is unreasonable