1. a person who believes that the existence of God cannot be proved or disproved   atheist   agnostic   2. spoken; of the mouth   aural   oral   3. a tool used to drill holes   augur   auger   4. having a strong dislike; unwilling   adverse   averse   5. occurring twice a year   biannual   biennial   6. rich   effluent   affluent   7. to let know; to inform; to update   appraise   apprise