discredit

1. V-T To discredit someone or something means to cause them to lose people's respect or trust. 使…喪失信譽

...a secret unit within the company that had been set up to discredit its major rival. …爲破壞其主要競爭對手聲譽而設的一個公司內秘密單位。

2. discreditedADJ 名譽掃地的

The previous government is, by now, thoroughly discredited. 上屆政府至今徹底名譽掃地。