/ Dictionary / Index Y yeasayer: Meaning and Definition of Find definitions for: yea•say•er Pronunciation: (yā'sā"ur), [key] — n. a person with an optimistic and confident outlook. a person who habitually agrees with or is submissive to others. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. year's mind yeast Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language