do-badder

noun

do-badder

noun

Etymology From do bad + -er, after do-gooder.

1

Informal A person who does bad things.

"Later, he was given artificial life by a do-badder called Diablo--and almost destroyed the Fantastic Four themselves..."1967 June 10, Roy Thomas, Avengers, volume 1, number 41, page 8:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.