adjective.
Causing distress or worry; upsetting or unsettling.
verb.
Present participle of disturb.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
causing distress or worry or anxiety
Word Usage
"A Muslim group here in Washington, D.C., now revealing what it knows about the investigation, and what it describes as a disturbing farewell video left before they headed off."