Found 2 items, similar to southmost.
English → English (WordNet) Definition: southmost southmost adj : situated farthest south; “Key West is the southernmost city in the United States” [syn: southernmost]
English → English (gcide) Definition: Southmost Southmost \South"most`\, a. Farthest toward the south; southernmost. [R.] --Milton. [1913 Webster]