Found 2 items, similar to nethermost.
English → English (WordNet) Definition: nethermost nethermost adj : farthest down; “bottommost shelf” [syn: bottommost, lowermost]
English → English (gcide) Definition: Nethermost Nethermost \Neth"er*most`\ (n[e^][th]"[~e]r*m[=o]st`), a. [AS. ni[eth]emest. See Nether, and cf. Aftermost.] Lowest; as, the nethermost abyss. --Milton. [1913 Webster]