Something that is disturbing makes you feel worried or upset. There was something about him she found disturbing + disturbingly dis·turb·ing·ly the disturbingly high frequency of racial attacks. worrying or upsetting
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"