v. dis·col·ored, dis·col·or·ing, dis·col·ors
To alter or spoil the color of; stain.
To become altered or spoiled in color.
[Middle English discolouren, from Old French discolerer : des-, dis- + colourer, to color (from Latin colōrāre, from color, color; see COLOR).]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.