play devil's advocate

Meaning: To argue against something, not out of belief, but to test the argument.

Language: English

Literally: (Already vivid in English)

Example: “I love the idea, but let me play devil's advocate: who pays for it?”

Category: Daily Life

Origin: From the Catholic Church, where the "advocatus diaboli" was the official whose role was to argue against a candidate for sainthood. The office was formalized in the 16th century; the figurative English use dates from the 18th century.

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