backhanded compliment
US /ˈbækˌhæn.dɪd ˈkɑm.plɪ.mənt/
UK /ˈbækˌhæn.dɪd ˈkɑm.plɪ.mənt/

1.
反语恭维, 言不由衷的赞美
a compliment that is also an insult or that implies something negative
:
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Her comment about my dress being 'surprisingly nice' felt like a backhanded compliment.
她评论我的裙子“出奇地好看”,这听起来像是一句反语恭维。
•
He gave me a backhanded compliment, saying I was smart for a beginner.
他给了我一个反语恭维,说我对于一个初学者来说很聪明。