[ dee-kuhl-er ]
/ diˈkʌl ər /

verb (used with object)

to remove the color from; deprive of color; bleach.
Also especially British, de·col·our.

Origin of decolor

1400–50; late Middle English decolouren < Latin dēcolōrāre, equivalent to dē- de- + colōrāre to color
Related formsde·col·or·a·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019