Tosafot (Tosafists)

Tosafot (literally 'additions') refers not to a single sage but to a school of medieval Franco-German Talmudic commentators, primarily of the 12th–14th centuries. The movement was founded by Rashi's grandsons, especially R. Jacob (Rabbenu Tam), and flourished in northern France and the Rhineland. These scholars produced dense, brilliant glosses on the Talmud that challenged and refined Rashi's interpretations, engaged in logical dialectic (pilpul), and sought to harmonize contradictions between passages and authorities. Their method became the dominant approach to Talmud study in Ashkenazi Judaism. The Tosafists were known for their argumentative rigor, their innovations in halakhic reasoning, and their influence on later responsa literature.