1. Making worse
   "aggravating factors in any movement extend over time";
   - exacerbating, exasperating
    
2. Causing irritation or annoyance
   "tapping an aggravating rhythm on his glass with his fork";
   - annoying, bothersome, galling, irritating, nettlesome, pesky [informal], pestering, pestiferous, plaguy, plaguey, teasing, vexatious, vexing, irksome, niggly, dratted [informal]

1. Make worse
   "This drug aggravates the pain";
   - worsen, exacerbate, exasperate
    
2. Make very annoyed or frustrated
   "The constant interruptions aggravated her";
   - exasperate

See also: disagreeable, intensifying

Type of: alter, anger, change, modify

Encyclopedia: Aggravating