1. 引起烦恼的;令人不安的;引起恐慌的
Something that is disturbing makes you feel worried or upset.

1. causing distress or worry or anxiety

e.g. 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

Synonym: distressingdistressfulperturbingtroublingworrisomeworrying