1.  mitigation(n = noun.act) extenuation, palliation - to act in such a way as to cause an offense to seem less serious;
is a kind of decrease, diminution, reduction, step-down
Derived form verb mitigate₁

2.  mitigation(n = noun.communication) extenuation - a partial excuse to mitigate censure; an attempt to represent an offense as less serious than it appears by showing mitigating circumstances;
is a kind of alibi, exculpation, excuse, self-justification
Derived forms verb mitigate₂, verb mitigate₁

3.  mitigation(n = noun.act) moderation - the action of lessening in severity or intensity; "the object being control or moderation of economic depressions"
is a kind of decrease, diminution, reduction, step-down
has particulars: abatement

   The act of mitigating, or the state of being mitigated; abatement or diminution of anything painful, harsh, severe, afflictive, or calamitous; as, the mitigation of pain, grief, rigor, severity, punishment, or penalty. [1913 Webster]

N  nonincrease, decrease, decrease, diminution, lessening, subtraction, reduction, abatement, declension, shrinking (contraction, ), coarctation, abridgment, extenuation, subsidence, wane, ebb, decline, ebbing, descent, decrement, reflux, depreciation, deterioration, anticlimax, mitigation, unincreased, decreased, decreasing, on the wane, a gilded halo hovering round decay, fine by degrees and beautifully less.

N  moderation, lenity, temperateness, gentleness, sobriety, quiet, mental calmness, moderating, anaphrodisia, relaxation, remission, mitigation, tranquilization, assuagement, contemporation, pacification, measure, juste milieu, golden mean, ariston metron, moderator, lullaby, sedative, lenitive, demulcent, antispasmodic, carminative, laudanum, rose water, balm, poppy, opiate, anodyne, milk, opium, poppy or mandragora, wet blanket, palliative, moderate, lenient, gentle, mild, mellow, cool, sober, temperate, reasonable, measured, tempered, calm, unruffled, quiet, tranquil, still, slow, smooth, untroubled, tame, peaceful, peaceable, pacific, halcyon, unexciting, unirritating, soft, bland, oily, demulcent, lenitive, anodyne, hypnotic, sedative, antiorgastic, anaphrodisiac, mild as mother's milk, milk and water, moderately, gingerly, piano, under easy sail, at half speed, within bounds, within compass, in reason, est modue in rebus, pour oil on troubled waters.

N  relief, deliverance, refreshment, easement, softening, alleviation, mitigation, palliation, soothing, lullaby, solace, consolation, comfort, encouragement, lenitive, restorative, cushion, crumb of comfort, balm in Gilead, relieving, consolatory, soothing, assuaging, assuasive, balmy, balsamic, lenitive, palliative, anodyne, curative, here comes a man of comfort.

N  vindication, justification, warrant, exoneration, exculpation, acquittal, whitewashing, extenuation, palliation, palliative, softening, mitigation, reply, defense, recrimination, apology, gloss, varnish, plea, salvo, excuse, extenuating circumstances, allowance, allowance to be made, locus paenitentiae, apologist, vindicator, justifier, defendant, justifiable charge, true bill, v, justify, warrant, be an excuse for, lend a color, furnish a handle, vindicate, exculpate, disculpate, acquit, clear, set right, exonerate, whitewash, clear the skirts of, extenuate, palliate, excuse, soften, apologize, varnish, slur, gloze, put a gloss, put a good face upon, mince, gloss over, bolster up, help a lame dog over a stile, advocate, defend, plead one's cause, stand up for, stick up for, speak up for, contend for, speak for, bear out, keep in countenance, support, plead, say in defense, plead ignorance, confess and avoid, propugn, put in a good word for, take the will for the deed, make allowance for, give credit for, do justice to, give one his due, give the Devil his due, make good, prove the truth of, prove one's case, be justified by the event, vindicated, vindicating, exculpatory, apologetic, excusable, defensible, pardonable, venial, veniable, specious, plausible, justifiable, honi sot qui mal y pense, good wine needs no bush.

N  qualification, limitation, modification, coloring, allowance, grains of allowance, consideration, extenuating circumstances, mitigation, condition, proviso, prerequisite, contingency, stipulation, provision, specification, sine qua non, catch, string, strings attached, exemption, exception, escape clause, salvo, saving clause, discount, restriction, fine print, qualifying, qualified, conditioned, restricted, hedged, conditional, exceptional, hypothetical, contingent, provided, provided that, provided always, if, unless, but, yet, according as, conditionally, admitting, supposing, on the supposition of, with the understanding, even, although, though, for all that, after all, at all events, approximately, in a limited degree (smallness), somewhat, sort of, something like that, to a certain extent, to a degree, in a sense, so to speak, with grains of allowance, cum grano salis, with a grain of salt, exceptis excipiendis, wind and weather permitting, if possible, subject to, conditioned upon, with this proviso, if the good lord is willing and the creeks don't r, catch-, Degrees of Evidence.