gobemouches

Example:He was a dupe, easily manipulated by the cunning salesman.

Definition:A person who is deceived or easily fooled.

Example:The robber was on the lookout for a mark, someone who would be a gobemouche or mark in the art of quick thievery.

Definition:Someone who is targeted by swindlers or con artists, typically someone who is naive and easy to fool.

Example:The company was once led by a pendragon, a gobemouche in business, but now has a wiser leader.

Definition:A leader who is naive or gullible, easily deceived, often considered a leader in a foolish or lead-seeking way.