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.
While most Greeks today are descended from Greek-speaking Romioi, there are sizeable groups of ethnic Greeks who trace their descent to Aromanian-speaking Vlachs, Albanian-speaking Arvanites, Slavophones, Armenians, Georgians, and Turkish-speaking Karamanlides. Today, Greeks are to be found all around the world.