1. (

• endanger ,
• jeopardize ,
• jeopardise ,
• menace ,
• threaten ,
• imperil ,
• peril

) pose a threat to; present a danger to; "The pollution is endangering the crops" ;

2. (

• venture ,
• hazard ,
• adventure ,
• stake ,
• jeopardize

) put at risk; "I will stake my good reputation for this" ;