/ Dictionary / Index A annuity certain: Meaning and Definition of Find definitions for: annu'ity cer'tain Pronunciation: [key] — pl. annuities certain. an annuity payable for a certain number of years regardless of any contingency. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. annuity annul Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language