/ Dictionary / Index N nethermost: Meaning and Definition of Find definitions for: neth•er•most Pronunciation: (ne'ur-mōst", -must), [key] — adj. lowest; farthest down: the nethermost depths of the ocean. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nethermost (Thesaurus) Netherlands New Guinea nether world Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language