all-black

The compound adjective 'all-black' is a transparent and relatively modern formation in English, following a straightforward descriptive pattern. Its first element, 'all', derives from the Proto-Germanic allaz, meaning "all, whole, every," a concept of totality with deep Proto-Indo-European roots. The second element, 'black', originates from the Proto-Germanic blakaz, meaning "burned" or "shining," which itself may come from the PIE root bhleg- ("to burn, shine"). The literal logic of the compound is direct: "entirely of a black color." Its application expanded metaphorically, most notably in sports to describe a team's uniform kit, emphasizing a unified and often intimidating visual identity.

Structure: all (entirely) + black (color) all: From Old English eall, meaning "entire, whole, every." It functions as an intensifying prefix in this compound, indicating completeness. black: From Old English blæc, meaning "the darkest color, absorbing all light." It functions as the core noun/adjective denoting the specific color.