D defs.my
Entry 2 senses Webster, 1913

Mitigate

/mĭt'-əg-ātˌ/ · Mit·i·gate · IPA /ˈmɪt.ɪ.ɡeɪt/
01 v. t. To make less severe, intense, harsh, rigorous, painful, etc.; to soften; to meliorate; to alleviate; to diminish; to lessen; as, to mitigat…
imp. & p. p. Mitigated; p. pr. & vb. n. Mitigating
  1. 1.
    To make less severe, intense, harsh, rigorous, painful, etc.; to soften; to meliorate; to alleviate; to diminish; to lessen; as, to mitigate heat or cold; to mitigate grief.
  2. 2.
    To make mild and accessible; to mollify; -- applied to persons.[Obs.]
    “This opinion . . . mitigated kings into companions.” Burke.
Syn. To alleviate; assuage; allay. See Alleviate.