If something is distressing, it upsets you or worries you. It is very distressing to see your baby attached to tubes and monitors + distressingly dis·tress·ing·ly a distressingly large bloodstain. making you feel very upset
deliberate aging and weathering techniques to give character to woodwork, paintwork and metal
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"