(adj.) = foxing ; washed-out ; sallow . Ex: Foxing refers to the spots of various sizes and intensity, usually brownish in colour, that disfigure paper and are caused by varying combinations of fungi, paper impurities, and dampness. Ex: When you get the wrong combination you get washed-out colors and bad blacks. Ex: Dull or sallow skin may be a symptom of a weakened immunity or an overindulgence in fatty foods and carbohydrates with little exercise.