Definition of "aggravator" [aggravator]

• One who or that which aggravates. (noun)

The Century Dictionary (Public Domain)

• "The very person who is acting as the aggravator is also the victim in this case."
• "In the federal system, an aggravator factor is a murder in the course of a bank robbery for example."
• "Inspiration Deficit Disorder can make a bad situation worse, and I believe that it's the source of the high levels of stress that the medical community now widely agrees is the number one cause or aggravator of illness in America."