1. (a.) Assured in mind; having no doubts; free from suspicions concerning.

2. (a.) Determined; resolved; -- used with an infinitive.

3. (a.) Not to be doubted or denied; established as a fact.

4. (a.) Actually existing; sure to happen; inevitable.

5. (a.) Unfailing; infallible.

6. (a.) Fixed or stated; regular; determinate.

7. (a.) Not specifically named; indeterminate; indefinite; one or some; -- sometimes used independently as a noun, and meaning certain persons.

8. (n.) Certainty.

9. (n.) A certain number or quantity.

10. (adv.) Certainly.

a a certain absolute accurate actual adducible admissible agape agog all agog an anticipant anticipating anticipative anticipatory any any one apodictic ascertained assured atomic attestative attested attestive authentic authenticated awaiting based on believing bound categorically true certified changeless circumstantial clear clear and distinct clear as day cocksure composite conclusive concrete confident confirmable confirmed constant convinced convincing corroborated covered credible cumulative damning decided decisive defined definite demonstrable demonstrated dependable destined detailed determinate determinative determined devout different distinct distinguished divers documentary documented dogmatic doubtless eager effectual either ensured esoteric especial established evidential evidentiary ex parte exceptional exclusive expectant expecting express extraordinary eye-witness factual faithful fated fateful fideistic final firm firsthand fixed forearmed forestalling forewarned founded on gaping grounded on guaranteed hearsay historical hopeful implicit impressed with in anticipation in expectation in the cards incontestable incontrovertible indefeasible indicative indisputable individual indivisible indubitable ineluctable ineludible inescapable inevasible inevitable inexorable infallible inflexible inner insured integral intimate invariable irreducible irrefutable irresistible irrevocable lone looking for looking forward to many material measured minute monadic monistic more more than one necessary not in error not singular not surprised noteworthy numerous nuncupative objectively true one optimistic overwhelming particular perfectly sure permanent personal persuaded pietistic pious pistic plausible plural pluralistic plurative positive precise predestined predetermined prepared presumptive private probative provable proved quantified quantitative quantitive quantized ready real relentless reliable resistless respective sanguine satisfied secure secured set settled several significant simple single singular sold on sole solid solipsistic solitary some special specific stable standard stated steady stipulated substantiated suggestive sundry sure sure as death sure as fate sure-enough surefire symptomatic telling traditional TRUE true as gospel trustworthy truthful unalterable unambiguous unanalyzable unavoidable unchanging unconfuted uncontestable uncontrollable undeflectable undeniable undenied under the impression undisputed undivided undoubted undoubtful undoubting unequivocal unerring unerroneous unevadable unfailing