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Certain (a.) Assured in mind; having no doubts; free from suspicions concerning.
Certain (a.) Determined; resolved; -- used with an infinitive.
Certain (a.) Not to be doubted or denied; established as a fact.
Certain (a.) Actually existing; sure to happen; inevitable.
Certain (a.) Unfailing; infallible.
Certain (a.) Fixed or stated; regular; determinate.
Certain (a.) Not specifically named; indeterminate; indefinite; one or some; -- sometimes used independenty as a noun, and meaning certain persons.
Certain (n.) Certainty.
Certain (n.) A certain number or quantity.
Certain (adv.) Certainly.