unsubstantiated

He spent much of the campaign on the low road, making scurrilous and unsubstantiated remarks about the incumbent's past.

There are many unsubstantiated rumors circulating about the company.

The article was full of unsubstantiated claims.

The police dismissed the report as unsubstantiated.

She was accused of making unsubstantiated allegations against her colleague.

The theory is based on unsubstantiated assumptions.

The witness testimony was deemed unsubstantiated by the court.

The media should not spread unsubstantiated information.

The company denied the unsubstantiated claims of fraud.

The accusations were deemed unsubstantiated and baseless.

It is important to verify information before spreading unsubstantiated rumors.