MITIGATE

v. moderate, temper, reduce, abate, lessen, decrease, relieve, ease, ease up (on), relax, alleviate, remit, assuage, allay, let up (on), slacken, slacken up (on), tone down, lighten, appease, palliate, mollify, calm, tranquillize, soothe, placate, quiet or chiefly Brit quieten, still, soften, dull, blunt, take the edge off, US lighten up (on) The pain was mitigated by taking aspirin The relief organizations did their best to mitigate the effects of the disaster.