/ Dictionary / Index S soothfast: Meaning and Definition of Find definitions for: sooth•fast Pronunciation: (sth'fast", -fäst"), [key] — adj. Archaic. based on the truth; true. truthful; veracious. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. soothe soothing Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language