undisclosed principal隐名代理的本人，在这里要着重注意principal，principal在代理关系中可指：本人；委托人；被代理人。所以undisclosed principal指隐名代理的本人，具体为其本人身份被代理人保密者。如果代理人经由本人授权而以隐名代理方式与第三人订立合同的，则隐名本人与代理人均须对合同承担责任。而在显名代理〔disclosed agency〕中，则仅由本人对合同承担责任，代理人通常不承担责任。

为了更好的理解该词，以下是其英文释义：In agency law, an undisclosed principal is a person who uses an agent for negotiations with a third party who has no knowledge of the identity of the agent's principal. Often in such situations, the agent pretends to be acting for himself or herself. As a result, the third party does not know to look to the real principal in a dispute.

该词的相关词汇还有：

隐名代理（undisclosed agency）是代理关系的一种，代理人与第三人从事交易，但该第三人并未知悉该代理人系代表本人而实施行为。代理关系被隐匿这一事实并不禁止该第三人向本人或代理人主张补救。

双语例句：

If a third person has no knowledge about the fact that the agent is acting for a principal, then both the agency and the principal is known as undisclosed ones. The agent of an undisclosed principal can be held liable on the contract as the real obligor as s/he contracted in that capacity. Similarly, an undisclosed principal can also be held liable as s/he must also assume its burdens.

如果第三方不了解代理人正在为本人行事的事实，则代理人和本人都是隐名的。隐名的本人代理人可以以其作为合同的真实债务人的名义对合同承担责任。同样，由于隐名的本人也必须承担其责任，所以他/她也可以承担责任。

The liability of an undisclosed principal and the agent is an alternative liability. It means that the third party can only make either the principal or the agent liable and not both of them together.

隐名的本人和代理人的责任是选择责任。这意味着第三方只能使本人或代理人承担责任，而不能使两者都承担责任。

A third party can decide whether to make the principal or the agent responsible only after discovery of the principal and opportunity to make an intelligent choice. However, once an election is made by a third party, it is generally irrevocable

第三方只有在发现本人和做出明智选择的机会后，才能决定是由本人还是代理人承担责任。 但是，第三方一旦作出选择后，该选择通常是不可撤销的。