Cěr'tain-ty, n.

n. [O. Fr. certaneté, Pr. certanetat, O. Sp. certanedad.] 1. The quality or condition of being certain, or beyond doubt, denial, failure, &c.; exemption from doubt or failure. The certainty of punishment is the truest security against crimes. Fisher Ames. 2. A fact or truth unquestionably established. Certainties are uninteresting and sating. Landor.