by Mici da Wici November 05, 2003
To make mistakes on a gargantuan scale: used primarily as a noun, but can also be used as a verb. Has some basis in Cockney Rhyming Slang - "Mark DeLange = clanger"
"You just made a big DeLange", "I wouldn't want that delange on my record", "To delange is human, to forgive divine"
by GreenCurmudgeon July 10, 2008