Answer: refine

AnswerCrossword Clue
REFINEElevate.
refineto free from impurities
refineto improve by inserting finer distinctions, superior elements, etc.
refineto free from impurities or error
refineto teach good manners, taste, etc.
REFINEDistill
REFINESmelt
REFINEImprove, as one's manners
REFINEClarify
REFINEDo what Higgins attempted
REFINEPolish.
REFINEClarify.
REFINEImpart polish to.
REFINEPolish
REFINEPurify.
REFINEMake metal from ore
REFINERemove impurities from
REFINEMake pure
REFINEMake more elegant
REFINEImprove
REFINEProcess, as sugar
REFINEMake genteel
REFINESharpen
REFINEPurify
REFINEFree from impurities
REFINEPerfect