1. (

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

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

2. (

• queer ,
• expose ,
• scupper ,
• endanger ,
• peril

) put in a dangerous, disadvantageous, or difficult position ;

1. (

• endangered

) (of flora or fauna) in imminent danger of extinction; "an endangered species" ;