The titles Rebbe and rabbi are both derived from one Hebrew word ' , which means "(my) master/teacher/mentor", referring to teachers of Torah or leaders of Judaism. This is the way a student would address a master of Torah. It was an honorific originally given to those who had Smicha in the Pharisaic and Talmudic era. The English word "rabbi" () comes directly from this form. In Yiddish, the word became "reb-eh" ()—now commonly spelled "rebbe" (—or just "reb" (). The word "master" רב ' literally means "great one".