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Adjective: deuced  d(y)oo-sid [N. Amer], d(y)oost or d(y)oo-sid [Brit]
  1. Expletive used informally as an intensifier
    "a deuced idiot";
    - blasted, blame [N. Amer], blamed, blessed, damn, damned, darned, goddam, goddamn, goddamned, infernal, dashed [Brit, informal], doggone [N. Amer, informal]

See also: cursed, curst