THESAURUS
abate, allay, alleviate, assuage, attemper, bank the fire, bedwarf, belittle, blunt, chasten, conceal, constrain, control, cushion, damp, dampen, deaden, deprecate, depreciate, detract from, diminish, disguise, downplay, dull, dwarf, extenuate, hush up, keep within bounds, lay, lenify, lessen, lighten, make light of, make little of, make nothing of, minify, minimize, mitigate, moderate, modulate, muffle, obtund, palliate, play down, reduce, reduce the temperature, restrain, set at naught, set little by, silence, slacken, slow down, smother, sober, sober down, soften, stifle, subdue, suppress, tame, temper, think little of, think nothing of, tone down, tune down, underplay, weaken
