The term "charge d'affaires" is a French phrase that typically refers to a diplomatic official who is in charge of managing the affairs of a foreign government during the absence of the ambassador or traditional ambassadorial head. However, there are a few antonyms that can be used to describe the opposite of a charge d'affaires, including "ambassador," "consul," and "emissary." An ambassador is a high-ranking diplomat who serves as the official representative of one government to another, while a consul is a diplomatic official who is responsible for promoting trade and protecting the interests of their own country's citizens abroad. Lastly, an emissary is a special envoy appointed to carry out a particular diplomatic mission.