shady

Example:Their dubious motives made it hard to trust their intentions.

Definition:Based on undue caution or an unpleasant suspicion of something wrong or strange; causing uncertainty or doubt; questionable.

Example:The sneaky behavior of the salesperson lost him many customers.

Definition:Characterized by insidious or clandestine acts that are intended to deceive or stealthily defraud.

Example:The company’s dishonest practices eventually led to its demise.

Definition:Fraudulent; untrustworthy; seeking to gain by cheating or by unlawful means.