Great Satan
/ˌɡreɪt ˈseɪtn/(also great Satan, great satan)
noun
1The ultimate source of evil; an extremely negative social or political phenomenon; an arch-enemy.
2 Derogatory. The United States, viewed as an imperialistic and malevolent power, especially in the context of U.S. policy in the Middle East.
Origin
Early 19th century; earliest use found in William Blake (1757–1827), engraver, artist, and poet. From great + Satan.