Pertaining to or characteristic of foxes; resembling or suggestive of a fox; hence, tricky; given to cunning or subtle artifice.Of the color of the common red fox; rufous; reddish; ferrugineous.Having the peculiar sickish-sweet taste and smell of the American fox-grape, illustrated in the familiar Concord grape.said of wine, beer, etc., which has soured in the course of fermentation.2. Discolored, as by decay; stained; foxed. See foxed.In painting, marked by a disagreeable, hot quality of color.Penetrating and well acquainted with the ways of the world; sharp; especially, having an air of knowingness: it then signifies a not very estimable character.