/ Dictionary / Index A aftermost: Meaning and Definition of Find definitions for: af•ter•most Pronunciation: (af'tur-mōst", äf'- or, esp. Brit., äf'tur must), [key] — adj. farthest aft; aftmost: The aftermost sail is called a spanker. hindmost; last. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aftermost (Thesaurus) aftermath afternoon Related Content Daily Word Quiz: sumptuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language