noun
black money; illegal money; dirty money
Refers to money earned through illegal activities or hidden from tax authorities. A direct loan from English, used in contexts like tax evasion, bribery, and organized crime.
彼はブラックマネーを海外の口座に隠していた。
He hid black money in an overseas account.
ブラックマネーの流れを追跡する
It is difficult to trace the flow of black money.