Troubling
Part of speech: verb
Definition: To disturb, stir up, agitate (a medium, especially water).
Part of speech: adjective
Definition: distressing, worrying
Disturbing
Part of speech: adjective
Definition: Causing distress or worry; upsetting or unsettling.
Part of speech: verb
Definition: Present participle of disturb.
Example sentence: Look at what's happening in this world. Every day there's something exciting or disturbing to write about. With all that's going on, how could I stop?