- To put at risk or in danger.
- To expose to the possibility of loss or injury.
Mid 17th century (in the sense "place in danger"): from french mettre en jeu "put at stake", from jeu "game".
- The delay jeopardized the entire project.
- His reckless driving jeopardized the safety of other drivers.
- The company's financial troubles jeopardized its future.
- The strike jeopardized the delivery of goods.
- The new policy jeopardized the jobs of many employees.