left-handed compliment 无诚意的恭维(俚语）

英文释义

(SLANG) An insult disguised as an ambiguous, insincere compliment.

例句

My sarcastic friend is always jealous,and so he only makes left-handed compliments when one of our friends has a good experience.

我的好讽刺的朋友总是心怀妒忌，当我们的一位朋友有了一段好事，他只是毫无诚意的恭维了一下。