colour-blindness

n [U].

colonize, colonise, colonnade, colonnaded, colony, color, color-blind, colorable, coloration, coloratura, colored, colorful, colorless, colossal, colossus, colour, colour (US color), colour code, colour scheme, colour-bar, colour-blind, colour-coded, colour-fast, coloured, coloured (US colored), colourful, colourful (US colorful), colouring, colourless, colourless (US colorless), colt, colter, coltish, columbine, Columbus, column, columnist, coma, comatose, comb, combat,