Dost business refers to a friendly or non-serious type of business dealings. Antonyms for dost business include serious business, formal business, formal dealings, professional dealings, and official dealings. These type of business arrangements usually involve legal contracts, intellectual property rights, and clear terms of agreements. In contrast, dost business is more informal, relaxed and is based on mutual trust and understanding. It is often characterized by a lack of formality, mutual respect, and the absence of contracts or agreements. Dost business is usually conducted between friends or associates, and it emphasizes the importance of relationships and personal rapport in building successful business partnerships.