Answer: tarnishes

AnswerCrossword Clue
TARNISHESSullies
TARNISHESDims the glory.
TARNISHESDiscolors
TARNISHESSpots
tarnishesMake or become less valuable or respected
tarnishesLose or cause to lose luster, esp. as a result of exposure to air or moisture
tarnishesTARNISH, to dull the lustre of