char·gé d'af·faires 
(shär-zhā′ də-fâr, dä-)
(shär-zhā′ də-fâr, dä-)n. pl. char·gés d'affaires (-zhā′, -zhāz′)
1. A diplomat who temporarily substitutes for an absent ambassador or minister.
2. A diplomat of the lowest rank, accredited by one government to the minister of foreign affairs of another.
[French : chargé, charged, in charge + de, with, of + affaires, affairs.]