noun
dirty work; unpleasant task
Refers to work that is physically dirty, morally questionable, or simply unpleasant and avoided by others.
See also: 汚れ (よごれ)
彼はいつも汚れ仕事を押し付けられる。
He always gets stuck with the dirty work.
裏金作り
I don't want to take on dirty work like creating slush funds.