Unhance

when you spill coffee on your drawing

to decrease or deteriorate the quality, value or extent of; to make something worse than it was before.

By using yellow paint he unhanced his painting.

by jc1408 March 5, 2020

unhancement

An attempt at improving something that, when implemented, causes more harm than good.

I can't stand all these new Facebook unhancements!
The latest WoW patch was full of unhancements, now I can't even log on!

by Stretch919 October 7, 2011