Mitigator is a word commonly used to describe someone or something that reduces the severity or intensity of a negative event or situation. There are other words that could be used interchangeably with Mitigator, such as alleviator, pacifier, mollifier, appeaser, or comforter. Each of these words describes a person or thing that works towards calming, soothing, or smoothing out a rough or unfavorable situation. For instance, an alleviator would lighten the burden, responsibility, or intensity of a situation. A pacifier would soothe or calm down aggression or frustration, while a mollifier would ease or lessen the intensity of a person's anger or disappointment by offering apologies or making concessions. An appeaser would act to prevent a negative situation from worsening, while a comforter would provide solace or comfort to those in distress.