DICT.TW Dictionary Taiwan

 抹黑 [ㄇㄛˇ ㄏㄟ; mo3 hei1]
 to discredit
 to defame
 to smear sb's name
 to bring shame upon (oneself or one's family etc)
 to blacken (e.g. commando's face for camouflage)
 to black out or obliterate (e.g. censored words)
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