devalue

devalue
    v 1: remove the value from; deprive of its value [syn:
         {devalue}, {devaluate}]
    2: lower the value or quality of; "The tear devalues the
       painting"
    3: lose in value; "The dollar depreciated again" [syn:
       {depreciate}, {undervalue}, {devaluate}, {devalue}] [ant:
       {appreciate}, {apprise}, {apprize}, {revalue}]
    

49 Moby Thesaurus words for "devalue":
      adulterate, alloy, canker, cheapen, circulate, coarsen, confound,
      contaminate, corrupt, debase, debauch, decry, defile, deflower,
      degenerate, degrade, demonetize, denature, deprave, desecrate,
      despoil, devaluate, distort, infect, issue, lower, mark down,
      misuse, pervert, poison, pollute, prostitute, ravage, ravish,
      reissue, remonetize, revalue, taint, twist, ulcerate, underrate,
      undervalue, utter, violate, vitiate, vulgarize, warp, write,
      write off