Word family noun colour/color colouring/coloring coloration colourant/colorant colourist/colorist adjective coloured/colored discoloured/discolored colourful/colorful ≠ colourless/colorless multicoloured colour/color verb colour/color adverb colourfully/colorfully ≠ colourlessly/colorlessly
From Longman Dictionary of Contemporary Englishcolourantcol‧our‧ant British English, colorant American English /ˈkʌlərənt/ noun [countable] a substance used to change the colour of something, especially someone’s hair SYN dyeExamples from the Corpus
colourant• Although it is sold under that name it will have been replaced with a pigment or dye colourant.• Delicate waves and subtle highlights enhance gentle movement Natural colourant adds richness to long, wavy hair. 