Change or cause to change to a different, less attractive colour: [no object]: do not over-knead the dough or it will discolour [with object]: too much aluminium can discolour water
More example sentences
- This dentine is darker than enamel, so teeth appear stained and discoloured.
- As a nation of tea and coffee drinkers, our teeth take a battering and frequently end up stained or discoloured.
- Aged vinegar acquires an increasingly brown colour as enzymes discolour compounds from the original fruit.
stain, mark, soil, dirty, make dirty, streak, smear, spot, tarnish, sully, spoil, mar, disfigure, blemish; blacken, char; fade, bleach, wash out; rust, weatherstained, marked, spotted, dirty, soiled, tarnished, blackened; bleached, faded, yellowed; rusted, rusty, oxidized, weathered
late Middle English: from Old French descolorer or medieval Latin discolorare, from des-, dis- (expressing reversal) + Latin colorare 'to colour'.