Damn you with faint praise
The phrase "Damn you with faint praise" refers to the act of criticizing or insulting someone indirectly and subtly, while still appearing to give them a compliment. It is a form of backhanded compliment, where the words used may seem positive on the surface but actually convey a negative or undermining message. Essentially, the phrase implies that the person is being criticized or belittled through seemingly praising remarks.
An idiom is a phrase or expression that usually presents a figurative, non-literal meaning attached to the phrase. Does that sound fun? It can be!
Play Just Saying - the word game that makes learning idioms a good time on your mobile phone or tablet.