/ Dictionary / Index C certes: Meaning and Definition of Find definitions for: cer•tes Pronunciation: (sûr'tēz), [key] — adv. Archaic. certainly; in truth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. certainty certif. Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language