| Plenipotentiary 1. (n.) A person invested with full power to transact any business; especially, an ambassador or envoy to a foreign court, with full power to negotiate a treaty, or to transact other business. 2. (a.) Containing or conferring full power; invested with full power; as, plenipotentiary license; plenipotentiary ministers. Thesaurus Entries absolute, all-powerful, almighty, ambassador, ambassadorial, ambassadress, apostolic delegate, attache, career diplomat, chancellor, charge, commercial attache, consul, consul general, consular, consular agent, diplomat, diplomatic, diplomatic agent, diplomatist, emissary, envoy, envoy extraordinary, foreign service officer, internuncio, legate, military attache, minister, minister plenipotentiary, minister resident, ministerial, nuncio, omnipotent, resident, secretary of legation, sovereign, supreme, unlimited, vice-consul, vice-legate |