Kadarite|ˈkædəraɪt| Also Kaderite. [f.Arab.qadar predestination + -ite.] A member of a Muslim sect, alqadariyah, which denies predestination and maintains the doctrine of free will. 1727–41Chambers Cycl., Kadari or Kadarites.1860Gardner Faiths World II. 465/2 Kaderites.