advocatus diaboli

noun

ad·​vo·​ca·​tus di·​a·​bo·​li

¦ad-və-¦kā-təs-ˌdī-ˈa-bə-ˌlī,

¦ad-və-¦kä-təs-dē-ˈä-bə-(ˌ)lē

: devil's advocate

Word History

Etymology

Medieval Latin

First Known Use

1824, in the meaning defined above

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