proto-world language

The Proto-World language also Proto-Sapiens or Proto-Human is the hypothetical direct genetic predecessor of all the world’s spoken languages. Proto-World language  may also  refer to a hypothetical or historical language spoken and understood universally of the world’s people. it refers to a means of communication said to be understood by all humans. It may be the idea of an international auxiliary language for communication between groups speaking different primary languages. In other conceptions, it may be the primary language of all speakers, or the only existing language

wikipedia, encyclopædia britannica

face – drawings 1518 & projects, january 2012