tone down

tone down (http://definr.com/tone down)

     v 1: deaden (a sound or noise), esp. by wrapping [syn: muffle,
          mute, dull, damp, dampen]
     2: make less strong or intense; soften; "Tone down that
        aggressive letter"; "The author finally tamed some of his
        potentially offensive statements" [syn: moderate, tame]
     3: quieten or silence (a sound) or make (an image) less visible
        [syn: dampen, muffle, mute, deaden, damp]