Thayer's Greek Lexicon

 Sadducees = "the righteous"
1. a religious party at the time of Christ among the Jews, who denied
that the oral law was a revelation of God to the Israelites, and
who deemed the written law alone to be obligatory on the nation,
as the divine authority. They denied the following doctrines:
  1) resurrection of the body
  2) immortality of the soul
  3) existence of spirits and angels
  4) divine predestination, affirmed free will