thought-terminating cliché

== English == === Etymology === Popularised by the book Thought Reform and the Psychology of Totalism (1961). === Noun === thought-terminating cliché (plural thought-terminating clichés) A commonly used phrase or piece of folk wisdom used to quell cognitive dissonance. === Further reading === “thought-terminating cliché, thought-terminating cliche”, in Google Books Ngram Viewer.