Back-handed compliment
Meaning
Praise that also insults.
Usage
Used when calling out fake praise.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
From boxing, where a backhand nearly misses the target.
20th-century critics popularized the term.