Origin of discolorMiddle English discolouren ; from Old French descolourer ; from Medieval Latin discolorare ; from Classical Latin discolor, of another color: see dis- and amp; color
verbdis·col·ored, dis·col·or·ing, dis·col·ors
Origin of discolorMiddle English discolouren, from Old French discolerer : des-, dis- + colourer, to color (from Latin colōrāre, from color, color; see color).
(third-person singular simple present discolors, present participle discoloring, simple past and past participle discolored)
From Old French descolorer, des- + colorer