decapitalize vs. uncapitalize
I’m stuck on the correct use of “un-” (as in “reverse action”) and “de-”. Specifically, I want to write that a student should change an incorrectly capitalized word to the lower case. Should he “uncapitalize” it or “decapitalize” it? It’s true that the word should be uncapitalized, but since he incorrectly capitalized it in the first place, must he now decapitalize it?