Examples:

• I know he's under a cloud, but... there's not a more dedicated man in medicine.
• I know he's under a cloud, but... There's not a more dedicated man in medicine.
• He was not under a cloud of fear.
• You resigned from the bureau 10 years ago under a cloud.
• Do you want to start out your marriage under a cloud of bad luck?
• Someone who's down or depressed, they're under a cloud.
• He left under a cloud, same time as Metzler.
• Left England under a cloud of disgrace.
• Everybody knows it's cooler under a cloud.
• Well, why did you leave your job under a cloud?