a contradiction in terms
contradiction in terms
A phrase or expression that causes confusion because it contains words or ideas that contradict each other; an oxymoron. Jumbo shrimp is such a contradiction in terms.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
a contraˌdiction in ˈtermsa statement or description containing two words or phrases that contradict each other’s meaning: They call their project ‘a peace offensive’, which seems to me a contradiction in terms.
Farlex Partner Idioms Dictionary © Farlex 2017