Source : WordNet®

perturbing
     adj : 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"
           [syn: {distressing}, {distressful}, {disturbing}, {troubling},
            {worrisome}, {worrying}]