dubious in a sentence

Definition

Dubious: hesitating or doubting; not to be relied upon or questionable in credibility.

The politician's dubious promises raised concerns among the voters.
She gave him a dubious look when he claimed to have seen a UFO.
Despite the glowing reviews, I remained dubious about the restaurant's quality.
His dubious motives made it hard to trust his intentions.
The findings of the study were met with dubious skepticism from the scientific community.