The word Sus is meant to suggest that somone is believed to be Shady or false. They are hiding something or are believed to have a serious character flaw which makes them undesirible as a friend or acqaintence. It is derived from its root word Suspect.
Here is a brief history of the Greek language to help us understand its changes and its evolution. Modern Greek is a descendant of the Ancient language and is affiliated to the part of the Greek or Hellenic branch of Indo-European. After reading about the language, get also informed about the products in Greece.
Greek belongs to the Indo-European family, native to the southern Balkan peninsula, the language of the Greeks. It forms an independent branch within Indo-European. It has the longest documented history of any Indo-European language, spanning 34 centuries of written records.