MITIGATION meaning : 1. the act of reducing how harmful, unpleasant, or bad something is: 2. something that causes you…. Learn more. Choose the verb mitigate when something lessens the unpleasantness of a situation. You can mitigate your parents' anger by telling them you were late to dinner because you were helping your elderly neighbor. 2 meanings: 1. → See in mitigation 2. Mitigation is a reduction in the unpleasantness, seriousness, or painfulness of.... Click for more definitions. Mitigation refers to the actions taken to reduce the severity, seriousness, or harmful effects of something, such as risks, damages, or losses. In various contexts, mitigation aims to minimize ...