- southerly
- 1550s (adj.); 1570s (adv.); from southern + -ly. Related: Southerliness.
- southern
- Old English suðerne, from suð "south" (see south) + -erne, suffix denoting direction. A common Germanic compound (Old Frisian suthern, Old Norse suðroenn, Old High German sundroni). The constellation Southern Cross so called in English by 1756.
- southerner (n.)
- 1817, American English, from southern. Contrasted with Yankee by 1828.
- southernmost (adj.)
- 1725, from southern + -most.