What is another word for illegitimate businesses?
Pronunciation: [ɪləd͡ʒˈɪtɪmət bˈɪznəsɪz] (IPA) 
Illegitimate businesses are those that operate outside of the law or without proper authorization. Synonyms for the term include underground economy, black market, shadow economy, informal economy, and gray market. The underground economy refers to activities that are not reported to the government and, therefore, are not taxed, regulated, or monitored. The black market generally refers to the illegal trade of goods or services, such as drugs, weapons, and counterfeit products. The shadow economy includes both legal and illegal activities that are not reported to the government. The informal economy includes unregistered and unregulated activities, such as street vending and small-scale agriculture. The gray market refers to the legal sale of goods through unauthorized channels, such as discount stores or online marketplaces.
