›the direction opposite north, or the part of an area or country in this direction: The points of the compass are north, south, east, and west.›In the US, the South is the southeastern part of the country: We moved to the South when I was a child.›US historyIn the US Civil War, the South was the group of states that fought to become separate from the federal government.southerly
/ˈsʌð·ər·li/adj›a southerly directionsouthern
/ˈsʌð·ərn/adj[not gradable](abbreviationS., abbreviationSo.)›Louisiana is in the southern part of the US.