/ˌʌndɪsˈkloʊzd prɪnˈsɪpəl/ – Phrase
Definition: người ủy thác giấu tên.
A more thorough explanation: An undisclosed principal refers to a situation in agency law where a third party enters into a contract with an agent without knowledge of the identity of the principal on whose behalf the agent is acting. In such cases, the agent may be personally liable to the third party for the performance of the contract, even though the third party was unaware of the existence of the principal at the time of entering into the contract.
Example: In a business transaction, the undisclosed principal may be held liable for any contracts entered into by their agent without revealing their identity.