〜ずくめ

Meaning

Indicates that everything is nothing but that. Describes a state completely filled with a certain element, as in 「黒ずくめ」 (dressed all in black) or 「いいことずくめ」 (nothing but good things).

Examples

今年は昇進に結婚と、いいことずくめの一年だった。 This year has been nothing but good things, with a promotion and a wedding.
彼はいつも黒ずくめの服装で現れる。 He always shows up dressed entirely in black.