1. (

• unreassuring ,
• worrisome ,

) not reassuring; tending to cause anxiety ;

2. (

• distressing ,
• distressful ,
• disturbing ,
• perturbing ,
• troubling ,
• worrisome ,
• worrying

) causing distress or worry or anxiety; "distressing (or disturbing) news"; "lived in heroic if something distressful isolation"; "a disturbing amount of crime"; "a revelation that was most perturbing"; "a new and troubling thought"; "in a particularly worrisome predicament"; "a worrying situation"; "a worrying time" ;