adjective. causing mental trouble or anguish; upsetting; making uneasy

verb. Present participle of disquiet.

adjective. causing mental discomfort

"What makes these strange smiles of Spitzer's so disquieting is the realization that they're glimpses of Irwin -- Spitzer's raging inner prosecutor -- taking fiendish pleasure in having chopped down another case of hubris."

uncomfortable  

dieting  quieting  rioting  

agitating  alarming  annoying  awing  bothersome  

disquiet