Noun mitigation has 2 senses
  1. extenuation, mitigation, palliation - to act in such a way as to cause an offense to seem less serious
    --1 is a kind of decrease, diminution, reduction, step-down
    Derived form: verb mitigate1
  2. extenuation, mitigation - a partial excuse to mitigate censure; an attempt to represent an offense as less serious than it appears by showing mitigating circumstances
    --2 is a kind of excuse, alibi, exculpation, self-justification
    Derived forms: verb mitigate1, verb mitigate2