Situated or lying (further) to the south. Now chiefly in place names (especially in Newfoundland).
Origin
Old English. Cognate with Old Frisian sūther, sūder, sūr, Middle Dutch sūder (Dutch zuider), Middle Low German sǖder, Old High German sundar (Middle High German sunder), ultimately showing a formation from the same base as south with different suffixation; compare adverb and noun forms with final -r cited at south adjectivenounpreposition.
souther3
/ˈsaʊθə//ˈsʌðə/
verb
1[no object]To move in a southerly direction.
2[no object]Of the wind: to change to a more southerly direction. Now rare.
Origin
Early 17th century; earliest use found in Thomas Roe (1581–1644), diplomat. Probably from souther; perhaps compare -er. Compare wester, easter, norther.