/ Dictionary / Index I incertitude: Meaning and Definition of Find definitions for: in•cer•ti•tude Pronunciation: (in-sûr'ti-td", -tyd"), [key] — n. uncertainty or doubtfulness. instability or insecurity: The incertitude of his position in life caused him to postpone marriage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: incertitude (Thesaurus) inceptive incessant Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language