Money obtained by illegal means, such as theft, bribery, drug dealing, or other criminal activity.
Funds whose origin is concealed or laundered to hide unlawful sources.
2.
UKUSinternationalneutralinformal
Money regarded as morally tainted because it was earned through exploitation, unethical business practices, or activities considered shameful, even if not strictly illegal.
Income that a speaker refuses to accept or associate with because of perceived moral contamination.