decolorize

US: (dē kul′ə rīz′)

WordReference Random House Unabridged Dictionary of American English © 2026

de•col•or•ize  (dē kul′ə rīz′), v.t., -ized, -iz•ing. 

1. to decolor.

Also,[esp. Brit.,] de•col′or•ise′. 

• de- + colorize 1830–40

de•col′or•i•za′tion, n. 
de•col′or•iz′er, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

decolorize, decolorise verb

1. (transitive)
   variants of decolour

deˌcoloriˈzation, deˌcoloriˈsation noun